New upstream version 4.0.3upstream/4.0.3

25 files changed, 1202 insertions, 77 deletions

diff --git a/docs/html/Xbase64ClassDiagram.jpg b/docs/html/Xbase64ClassDiagram.jpg
new file mode 100755
index 0000000..81bb539
--- /dev/null
+++ b/docs/html/Xbase64ClassDiagram.jpg
diff --git a/docs/html/gpl-3.0.txt b/docs/html/gpl-3.0.txt
new file mode 100755
index 0000000..94a9ed0
--- /dev/null
+++ b/docs/html/gpl-3.0.txt
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/docs/html/index.htm b/docs/html/index.htm
deleted file mode 100755
index 3c992f5..0000000
--- a/docs/html/index.htm
+++ /dev/null
@@ -1,33 +0,0 @@
-<!DOCTYPE HTML PUBLIC>
-<HTML><TITLE>Xbase DBMS Documentation Table of Contents</TITLE>
-<BODY BGCOLOR=#FFFFFF>
-<H1><p align="center">Xbase DBMS<br>
-Last Updated 11/21/22<br>Version 4.x.x</p></H1>
-<h2>Documentation Table Of Contents</h2>
-<h3>Section 1 - Xbase Concepts</h3>
-<h4>
-<A HREF="xbc1.htm">Chapter 1 - Getting Started</A><br>
-<A HREF="xbc2.htm">Chapter 2 - Database Overview</A><br>
-<A HREF="xbc3.htm">Chapter 3 - Fields and Strings</A><br>
-<A HREF="xbc4.htm">Chapter 4 - Date Processing</A><br>
-<A HREF="xbc5.htm">Chapter 5 - Expression Handling</A><br>
-<A HREF="xbc6.htm">Chapter 6 - Index Overview</A><br>
-<A HREF="xbc7.htm">Chapter 7 - NDX (DBase) Indices</A><br>
-<A HREF="xbc8.htm">Chapter 8 - MDX (DBase) Indices</A><br>
-<A HREF="xbc9.htm">Chapter 9 - NTX (Clipper) Indices</A><br>
-<A HREF="xbc10.htm">Chapter 10 - CDX (FoxPro) Indices</A><br>
-<A HREF="xbc11.htm">Chapter 11 - IDX (FoxPro) Indices</A><br>
-<A HREF="xbc12.htm">Chapter 12 - Record and File Locking</A><br>
-<A HREF="xbc13.htm">Chapter 13 - Logfile Support</A><br>
-<A HREF="xbc14.htm">Chapter 14 - SQL Support</A><br>
-<A HREF="xbc15.htm">Chapter 15 - Utility programs</A><br>
-
-</h4>
-<h3>Section 3 - Appendices</h3>
-<h4>
-<A HREF="copying.lib">Appendix C - GPL Library License</A><br>
-<A HREF="xbbib.htm">Appendix D - Bibliography</A><br>
-</h4>
-<p><img src="xbase.jpg"><br><hr>
-</BODY>
-</HTML>
diff --git a/docs/html/index.html b/docs/html/index.html
new file mode 100755
index 0000000..098c7ea
--- /dev/null
+++ b/docs/html/index.html
@@ -0,0 +1,43 @@
+<!DOCTYPE HTML PUBLIC>
+<HTML><TITLE>Xbase DBMS Documentation Table of Contents</TITLE>
+<BODY BGCOLOR=#FFFFFF>
+<H1><p align="center">Xbase DBMS<br>
+Last Updated 12/21/22<br>Version 4.0.3</p></H1>
+<h2>Documentation Table Of Contents</h2>
+<h3>Section 1 - Xbase Concepts</h3>
+<h4>
+<A HREF="xbc1.html">Chapter 1 - Getting Started</A><br>
+<A HREF="xbc2.html">Chapter 2 - Database Overview</A><br>
+<A HREF="xbc3.html">Chapter 3 - Fields and Strings</A><br>
+<A HREF="xbc4.html">Chapter 4 - Date Processing</A><br>
+<A HREF="xbc5.html">Chapter 5 - Expression Handling</A><br>
+<A HREF="xbc6.html">Chapter 6 - Index Overview</A><br>
+<A HREF="xbc7.html">Chapter 7 - NDX (DBase) Indices</A><br>
+<A HREF="xbc8.html">Chapter 8 - MDX (DBase) Indices</A><br>
+<A HREF="xbc9.html">Chapter 9 - NTX (Clipper) Indices</A><br>
+<A HREF="xbc10.html">Chapter 10 - CDX (FoxPro) Indices</A><br>
+<A HREF="xbc11.html">Chapter 11 - IDX (FoxPro) Indices</A><br>
+<A HREF="xbc12.html">Chapter 12 - Record and File Locking</A><br>
+<A HREF="xbc13.html">Chapter 13 - Logfile Support</A><br>
+<A HREF="xbc14.html">Chapter 14 - SQL Support</A><br>
+
+
+</h4>
+<h3>Section 2 - Classes and Objects</h3>
+<h4>
+<A HREF="xbc15.html">Chapter 15 - General Class Information</A><br>
+
+</h4>
+<h3>Section 3 - Appendices</h3>
+<h4>
+<A HREF="gpl-3.0.txt">Appendix A - GPL Library License</A><br>
+<A HREF="xbab.html">Appendix B - Bibliography</A><br>
+<A HREF="xbac.html">Appendix C - Library Build Options</A><br>
+<A HREF="xbad.html">Appendix D - File Types</A><br>
+<A HREF="xbae.html">Appendix E - Error Codes</A><br>
+<A HREF="xbaf.html">Appendix F - Utility and Example Programs</A><br>
+
+</h4>
+<p><img src="xbase.jpg"><br><hr>
+</BODY>
+</HTML>
diff --git a/docs/html/xbbib.htm b/docs/html/xbab.html
index 70e4e82..809c2ea 100755
--- a/docs/html/xbbib.htm
+++ b/docs/html/xbab.html
@@ -3,7 +3,7 @@
 <TITLE>Xbase DBMS Bibliography</TITLE>
 <BODY BGCOLOR=#FFFFFF>
 <H1><p align="center">Xbase DBMS Bibliography</p></H1>
-<p align="center">Page Updated 2/1/99</p><hr>
+<p align="center">Page Updated 12/9/22</p><hr>
 
 Bachman, Erik<br>
 Xbase File Format Description / Erik Bachman, Roskilde, Denmark: Clickety
@@ -59,5 +59,11 @@ The Draft Standard C++ Library by P.J. Plauger, Prentice Hall, New Jersey,
 H.M Dietel/P.J. Deitel: C++ How To Program, Prentice Hall, Englewod Cliffs,
 New Jersey 07632<br><br>
 
+Molinaro, Anthony:<br>
+SQL Cookbook, O'Reilly Media, Inc, 2005,
+Sebastopol CA: ISBN 978-0-596-00976-2<br><br>
+
+<hr>
+<p><img src="xbase.jpg"><br><hr>
 </BODY>
 </HTML>
diff --git a/docs/html/xbac.html b/docs/html/xbac.html
new file mode 100755
index 0000000..0b0fb0b
--- /dev/null
+++ b/docs/html/xbac.html
@@ -0,0 +1,102 @@
+<!DOCTYPE HTML PUBLIC>
+<HTML>
+<TITLE>Xbase DBMS Appendix C</TITLE>
+<BODY BGCOLOR=#FFFFFF>
+<H2><p align="center">Library Build Compile Options</p></H2>
+<p align="center">Chapter Updated 12/09/22</p><hr>
+
+
+
+<center>
+<H2>Library Build Compile Options</H2>
+<table >
+<TABLE BORDER>
+<TR VALIGN="BASELINE">
+<TR><TH>Options</TH><TH>Description</TH><TH>Prerequisites - Notes</TH></TR>
+<TR><TD>XB_DEBUG_SUPPORT</TD><TD>Include library debugging functionality</TD></TR>
+<TR><TD>XB_UTILS_SUPPORT</TD><TD>Build utility programs?</TD></TR>
+<TR><TD>XB_EXAMPLES_SUPPORT</TD><TD>Build example programs?</TD></TR>
+<TR><TD>XB_MEMO_SUPPORT</TD><TD>Include Memo file support?</TD><TD>Prereq: XB_LINKLIST_SUPPORT</TD></TR>
+<TR><TD>XB_LOGGING_SUPPORT</TD><TD>Include logging support?</TD></TR>
+<TR><TD>XB_DBF3_SUPPORT</TD><TD>Include DBF Version III support?</TD><TD>At lease one of XB_DBF3_SUPPORT or<br> XB_DBF4_SUPPORT required</TD></TR>
+<TR><TD>XB_DBF4_SUPPORT</TD><TD>Include DBF Version IV support?</TD><TD>At least one of XB_DBF3_SUPPORT or<br> XB_DBF4_SUPPORT required</TD></TR>
+<TR><TD>XB_LINKLIST_SUPPORT</TD><TD>Include Linklist functionality?</TD></TR>
+<TR><TD>XB_LOCKING_SUPPORT</TD><TD>Include File and Record locking support?</TD><TD>Prereq: XB_LINKLIST_SUPPORT</TD></TR>
+<TR><TD>XB_FUNCTION_SUPPORT</TD><TD>Include Expression Function support?</TD></TR>
+<TR><TD>XB_EXPRESSION_SUPPORT</TD><TD>Include Expression support?</TD><TD>Prereq: XB_FUNCTION_SUPPORT<br>and XB_LINKLIST_SUPPORT</TD></TR>
+<TR><TD>XB_NDX_SUPPORT</TD><TD>Include NDX Index support?</TD><TD>Prereq: XB_EXPRESSION_SUPPORT</TD></TR>
+<TR><TD>XB_MDX_SUPPORT</TD><TD>Include MDX Index support?</TD><TD>Prereq: XB_EXPRESSION_SUPPORT</TD></TR>
+<TR><TD>XB_SQL_SUPPORT</TD><TD>Include SQL support?</TD><TD>Prereq: XB_MEMO_SUPPORT<br>and XB_DBF4_SUPPORT</TR>
+<TR><TD>XB_INF_SUPPORT</TD><TD>Include INF support (Provides auto open functions for NDX indices)</TD></TR>
+<TR><TD>XB_FILTER_SUPPORT</TD><TD>Include Filter support</TD><TD>Prereq: XB_EXPRESSION_SUPPORT</TD></TR>
+</TABLE></center>
+
+
+
+<br><br><hr><br><br>
+<center><h2>CMake</h2></center>
+The Xbase library is built using the CMake build manager. Cmake provides the architecture for 
+building cross platform projects with a unified build system.  If you are not familiar with CMake, 
+you can familiarize yourself with it at https://cmake.org
+<br><br>
+To modify the XBase64 compile options take the following steps:<br><br><br>
+
+1) Identify which platform you want to build and identify the correct build folder
+<table border=1>
+<tr><td>/xbase64-4.x.x/build/borland5.5</td><td>Older free Borland 5.5 32 bit Windows compiler</td></tr>
+<tr><td>/xbase64-4.x.x/build/linux32</td><td>Linux 32 bit build folder</td></tr>
+<tr><td>/xbase64-4.x.x/build/linux64</td><td>Linux 64 bit build folder</td></tr>
+<tr><td>/xbase64-4.x.x/build/win32vs</td><td>Windows 32 bit Visual Studio folder</td></tr>
+<tr><td>/xbase64-4.x.x/build/win64vs</td><td>Windows 64 bit Visual Studio folder</td></tr>
+<tr><td>/xbase64-4.x.x/build/mac64</td><td>MAC 64 but folder</td></tr>
+</table>
+
+<br><br><br>
+2) Navigate to the appropriate folder identified in step 1.  Once you are in the correct folder,
+verify there is a <em>CmakeLists.txt</em> file.  That file is the main librbary build configuration file.
+<br><br>
+
+3) Select one if the following methods to update the config options 
+<table border=1>
+<tr><td>For Windows users, use program cmake-gui.exe</td></tr>
+<tr><td>For Unix/Linux/Mac users, use program cmake-gui</td></tr>
+<tr><td>For Unix command line, use program "ccmake ."</td></tr>
+<tr><td>Or manually edit the <em>CmakeLists.txt</em> file with your favorite text editor</td></tr>
+</table>
+<br><br><br>
+<hr><br><br><br>
+<center><h2>Debug Support <em>(Option: XB_DEBUG_SUPPORT)</em></h2></center>
+The following methods are included from the library when the XB_DEBUG_OPTION is turned on.  They
+are mainly used for library debugging purposes and can be safely left turned off.<br><br>
+<center><table border=1>
+<TR><TH>Method/Function</TH><TH>Description</TH></TR>
+<tr><td>xbDate::Dump()</td><td>Dump the xbDate object internals to stdout</td></tr>
+<tr><td>xbDate::DumpDateTable()</td><td>Dump internal date tables to stdout</td></tr>
+<tr><td>xbDbf::DumpTableLockStatus()</td><td>Dump internal locking status / structures</td></tr>
+<tr><td>xbExp::DumpToken()</td><td>Dump expression values</td></tr>
+<tr><td>xbExp::DumpTree()</td><td>Dump expression token tree</td></tr>
+<tr><td>xbExpNode::DumpToken()</td><td>Dump expression node values</td></tr>
+<tr><td>xbFile::DumpBlockToDisk</td><td>Dump specified block of data to a disk file</td></tr>
+<tr><td>xbIx::DumpNode</td><td>Dump index node header</td></tr>
+<tr><td>xbIxMdx::DumpBlock</td><td>Dump MDX index block</td></tr>
+<tr><td>xbIxMdx::DumpFreeBlocks</td><td>Dump MDX free block chain</td></tr>
+<tr><td>xbIxMdx::DumpHeader</td><td>Dump MDX file header info</td></tr>
+<tr><td>xbIxMdx::DumpIxForTag</td><td>Dump MDX index keys and values for a given tag</td></tr>
+<tr><td>xbIxMdx::DumpIxNodeChain</td><td>Dump MDX current memory node linked list for a given tag</td></tr>
+<tr><td>xbIxMdx::DumpTagBlocks</td><td>Dump MDX blocks for a given tag</td></tr>
+<tr><td>xbIxNdx::DumpHeader</td><td>Dump MDX file header info</td></tr>
+<tr><td>xbIxNdx::DumpIxNodeChain</td><td>Dump MDX current memory node linked list for a given tag</td></tr>
+<tr><td>xbIxNdx::DumpNode</td><td>Dump index node header</td></tr>
+<tr><td>xbIxNdx::DumpTagBlocks</td><td>Dump NDX blocks for a given tag</td></tr>
+<tr><td>xbMemoDbt3::DumpMemoFreeChain()</td><td>Place holder</td></tr>
+<tr><td>xbMemoDbt4::DumpMemoFreeChain()</td><td>Dump list of free blocks available for reuse</td></tr>
+<tr><td>xbMemoDbt4::DumpMemoInternals()</td><td>Dump V4 memo file internals</td></tr>
+<tr><td>xbString::Dump()</td><td>Dump string internals</td></tr>
+<tr><td>xbString::DumpHex()</td><td>Dump string internals in hex</td></tr>
+</table></center>
+
+
+<br><hr><br><br>
+<p><img src="xbase.jpg"><br><hr>
+</BODY>
+</HTML>
diff --git a/docs/html/xbad.html b/docs/html/xbad.html
new file mode 100755
index 0000000..7356b7b
--- /dev/null
+++ b/docs/html/xbad.html
@@ -0,0 +1,27 @@
+<!DOCTYPE HTML PUBLIC>
+<HTML>
+<TITLE>Xbase DBMS Appendix D</TITLE>
+<BODY BGCOLOR=#FFFFFF>
+<H2><p align="center">File Types</p></H2>
+<p align="center">Chapter Updated 12/09/22</p><hr>
+
+<h3>Supported File Types.</h3>
+
+All supported file types have one the following file extensions:
+The extensions are allway upper case.<br><br>
+
+
+<table >
+<TABLE BORDER>
+<TR VALIGN="BASELINE">
+<TR><TH>File Type</TH><TH>Description</TH></TR>
+<TR><TD>*.DBF</TD><TD>Main database file or Table</TD></TR>
+<TR><TD>*.DBT</TD><TD>Memo file data</TD></TR>
+<TR><TD>*.INF</TD><TD>INF - Behave like MS ODBC File.  Used to auto open NDX index file</TD></TR>
+<TR><TD>*.MDX</TD><TD>Production V4 index file, contains up to 47 tags.  Automatically opened.</TD></TR>
+<TR><TD>*.NDX</TD><TD>Non production V3 index files.  Contains one tag per file.  Automatically opened if included in ocrreespondin INF file.</TD></TR>
+</TABLE>
+<br><hr><br>
+<p><img src="xbase.jpg"><br><hr>
+</BODY>
+</HTML>
diff --git a/docs/html/xbae.html b/docs/html/xbae.html
new file mode 100755
index 0000000..5f1dce6
--- /dev/null
+++ b/docs/html/xbae.html
@@ -0,0 +1,94 @@
+<!DOCTYPE HTML PUBLIC>
+<HTML>
+<TITLE>Xbase DBMS Appendix E</TITLE>
+<BODY BGCOLOR=#FFFFFF>
+<H2><p align="center">Eror Codes</p></H2>
+<p align="center">Chapter Updated 12/09/22</p><hr>
+
+<h3>Error Codes and Error Processing</h3>
+
+Alomost all Xbase64 methods and functions return and xbInt16 return code, which is zero or positive on success and negative 
+if an error condition occurs.
+<br><br>
+As of the 4.x.x release, the library has been extensively updated to use exception processing and most error
+conditions will result in a mesage written to the logfile if logfile processing is enabled.  The error routines
+typically write two values to the logfile, an error code value and an iErrorStop value which identifies where 
+exactly in the library code the error occurred.
+<br><br>
+Error codes are defined in the xbretcod.h file.<br><br><br>
+
+
+<TR><TH>File Type</TH><TH>Description</TH></TR>
+<TR><TD>*.DBF</TD><TD>Main database file or Table</TD></TR>
+<TR><TD>*.DBT</TD><TD>Memo file data</TD></TR>
+<TR><TD>*.INF</TD><TD>INF - Behave like MS ODBC File.  Used to auto open NDX index file</TD></TR>
+<TR><TD>*.MDX</TD><TD>Production V4 index file, contains up to 47 tags.  Automatically opened.</TD></TR>
+<TR><TD>*.NDX</TD><TD>Non production V3 index files.  Contains one tag per file.  Automatically opened if included in ocrreespondin INF file.</TD></TR>
+
+
+<br><br><br>
+<table >
+<TABLE BORDER>
+<TR VALIGN="BASELINE">
+<TR><TH>Description</TH><TH>Error Code</TH><TH>Category</TH></TR>
+<TR><TD> XB_NO_ERROR               </TD><TD>      0       </TD><TD> general </TD></TR>
+<TR><TD> XB_NO_MEMORY              </TD><TD>   -100       </TD><TD> general </TD></TR>
+<TR><TD> XB_INVALID_OPTION         </TD><TD>   -101       </TD><TD> general </TD></TR>
+<TR><TD> XB_DUP_TABLE_OR_ALIAS     </TD><TD>   -110       </TD><TD> table manager </TD></TR>
+<TR><TD> XB_INVALID_NODELINK       </TD><TD>   -120       </TD><TD> linklist </TD></TR>
+<TR><TD> XB_KEY_NOT_UNIQUE         </TD><TD>   -121       </TD><TD> linklist </TD></TR>
+<TR><TD> XB_FILE_EXISTS            </TD><TD>   -200       </TD><TD> file </TD></TR>
+<TR><TD> XB_ALREADY_OPEN           </TD><TD>   -201       </TD><TD> file </TD></TR>
+<TR><TD> XB_DBF_FILE_NOT_OPEN      </TD><TD>   -202       </TD><TD> file </TD></TR>
+<TR><TD> XB_FILE_NOT_FOUND         </TD><TD>   -203       </TD><TD> file </TD></TR>
+<TR><TD> XB_FILE_TYPE_NOT_SUPPORTED</TD><TD>   -204       </TD><TD> file </TD></TR>
+<TR><TD> XB_RENAME_ERROR           </TD><TD>   -205       </TD><TD> file </TD></TR>
+<TR><TD> XB_INVALID_OBJECT         </TD><TD>   -206       </TD><TD> file </TD></TR>
+<TR><TD> XB_NOT_OPEN               </TD><TD>   -207       </TD><TD> file </TD></TR>
+<TR><TD> XB_NOT_FOUND              </TD><TD>   -208       </TD><TD> file </TD></TR>
+<TR><TD> XB_OPEN_ERROR             </TD><TD>   -209       </TD><TD> file </TD></TR>
+<TR><TD> XB_CLOSE_ERROR            </TD><TD>   -210       </TD><TD> file </TD></TR>
+<TR><TD> XB_SEEK_ERROR             </TD><TD>   -211       </TD><TD> file </TD></TR>
+<TR><TD> XB_READ_ERROR             </TD><TD>   -212       </TD><TD> file </TD></TR>
+<TR><TD> XB_WRITE_ERROR            </TD><TD>   -213       </TD><TD> file </TD></TR>
+<TR><TD> XB_EOF                    </TD><TD>   -214       </TD><TD> file </TD></TR>
+<TR><TD> XB_BOF                    </TD><TD>   -215       </TD><TD> file </TD></TR>
+<TR><TD> XB_INVALID_BLOCK_SIZE     </TD><TD>   -216       </TD><TD> file </TD></TR>
+<TR><TD> XB_INVALID_BLOCK_NO       </TD><TD>   -217       </TD><TD> file </TD></TR>
+<TR><TD> XB_INVALID_RECORD        </TD><TD>   -218       </TD><TD> file </TD></TR>
+<TR><TD> XB_DELETE_FAILED          </TD><TD>   -219       </TD><TD> file </TD></TR>
+<TR><TD> XB_INVALID_TABLE_NAME     </TD><TD>   -220       </TD><TD> file </TD></TR>
+<TR><TD> XB_EMPTY                  </TD><TD>   -221       </TD><TD> file </TD></TR>
+<TR><TD> XB_LIMIT_REACHED          </TD><TD>   -222       </TD><TD> file </TD></TR>
+<TR><TD> XB_INVALID_FIELD_TYPE     </TD><TD>   -300       </TD><TD> field </TD></TR>
+<TR><TD> XB_INVALID_FIELD_NO       </TD><TD>   -301       </TD><TD> field </TD></TR>
+<TR><TD> XB_INVALID_DATA           </TD><TD>   -302       </TD><TD> field </TD></TR>
+<TR><TD> XB_INVALID_FIELD_NAME     </TD><TD>   -303       </TD><TD> field </TD></TR>
+<TR><TD> XB_INVALID_MEMO_FIELD     </TD><TD>   -304       </TD><TD> field </TD></TR>
+<TR><TD> XB_INVALID_FIELD          </TD><TD>   -305       </TD><TD> field </TD></TR>
+<TR><TD> XB_INVALID_FIELD_LEN      </TD><TD>   -306       </TD><TD> field </TD></TR>
+<TR><TD> XB_INVALID_DATE           </TD><TD>   -307       </TD><TD> date field </TD></TR>
+<TR><TD> XB_INVALID_LOCK_OPTION    </TD><TD>   -400       </TD><TD> lock </TD></TR>
+<TR><TD> XB_LOCK_FAILED            </TD><TD>   -401       </TD><TD> lock </TD></TR>
+<TR><TD> XB_TABLE_NOT_LOCKED       </TD><TD>   -402       </TD><TD> lock - need table locked for operation </TD></TR>
+<TR><TD> XB_PARSE_ERROR            </TD><TD>   -500       </TD><TD> expression </TD></TR>
+<TR><TD> XB_INVALID_FUNCTION       </TD><TD>   -501       </TD><TD> expression </TD></TR>
+<TR><TD> XB_INVALID_PARM           </TD><TD>   -502       </TD><TD> expression </TD></TR>
+<TR><TD> XB_INCONSISTENT_PARM_LENS </TD><TD>   -503       </TD><TD> expression </TD></TR>
+<TR><TD> XB_INCOMPATIBLE_OPERANDS  </TD><TD>   -504       </TD><TD> expression </TD></TR>
+<TR><TD> XB_UNBALANCED_PARENS      </TD><TD>   -505       </TD><TD> expression </TD></TR>
+<TR><TD> XB_UNBALANCED_QUOTES      </TD><TD>   -506       </TD><TD> expression </TD></TR>
+<TR><TD> XB_INVALID_EXPRESSION     </TD><TD>   -507       </TD><TD> expression </TD></TR>
+<TR><TD> XB_INVALID_KEYNO          </TD><TD>   -600       </TD><TD> index </TD></TR>
+<TR><TD> XB_INVALID_INDEX          </TD><TD>   -601       </TD><TD> index file error </TD></TR>
+<TR><TD> XB_INVALID_TAG            </TD><TD>   -602       </TD><TD> invalid index tag name, must be <= 10 bytes </TD></TR>
+<TR><TD> XB_INVALID_PAGE           </TD><TD>   -603       </TD><TD> invalid index page </TD></TR>
+<TR><TD> XB_SYNTAX_ERROR           </TD><TD>   -700       </TD><TD> sql syntax error </TD></TR>
+</TABLE>
+
+
+
+<br><hr><br>
+<p><img src="xbase.jpg"><br><hr>
+</BODY>
+</HTML>
diff --git a/docs/html/xbc15.htm b/docs/html/xbaf.html
index 89bab09..110db7b 100755
--- a/docs/html/xbc15.htm
+++ b/docs/html/xbaf.html
@@ -3,11 +3,25 @@
 <TITLE>Xbase DBMS Chapter 15</TITLE>
 <BODY BGCOLOR=#FFFFFF>
 <H1><p align=center>Sample Programs</p></H1>
-<p align=center>Page Updated 11/30/22</p><hr><br><br>
-Sample Xbase DBMS programs include in the library.<br><br>
+<p align=center>Page Updated 12/20/22</p><hr><br><br>
+
 <CENTER>
 <TABLE BORDER>
-<CAPTION ALIGN=TOP><H3>XBase Sample Programs</H3></CAPTION>
+<CAPTION ALIGN=TOP><H3>XBase Example Programs</H3></CAPTION>
+<TR ALIGN=BASELINE>
+<TR><TH ALIGN=LEFT>Program<TD>Program Description
+<TR><TH ALIGN=LEFT>xb_ex_string<TD>Example program to demonstrate xbString class usage
+<TR><TH ALIGN=LEFT>xb_ex_v3_create_dbf<TD>Example program to create V3 DBF file
+<TR><TH ALIGN=LEFT>xb_ex_v3_upd_dbf<TD>Example program to update V3 DBF file
+<TR><TH ALIGN=LEFT>xb_ex_v4_create_dbf<TD>Example Program to create V4 DBF file
+<TR><TH ALIGN=LEFT>xb_ex_v4_upd_dbf<TD>Example program to update V4 DBF file
+</TABLE></CENTER>
+<br><br>
+
+
+<CENTER>
+<TABLE BORDER>
+<CAPTION ALIGN=TOP><H3>XBase Utility Programs</H3></CAPTION>
 <TR ALIGN=BASELINE>
 <TR><TH ALIGN=LEFT>Program<TD>Program Description
 <TR><TH ALIGN=LEFT>xb_cfg_check<TD>This program prints the compile settings and options in use
@@ -16,18 +30,15 @@ Sample Xbase DBMS programs include in the library.<br><br>
 <TR><TH ALIGN=LEFT>xb_deletall<TD>This program marks all records in a DBF file for deletion
 <TR><TH ALIGN=LEFT>xb_dumpdbt<TD>Debug memo files
 <TR><TH ALIGN=LEFT>xb_dumphdr<TD>This program opens an Xbase file and prints its header
-<TR><TH ALIGN=LEFT>xb_dumprecs<TD>This program dumps records for an X-Base file 
-<TR><TH ALIGN=LEFT>xb_ex_string<TD>Example string program
-<TR><TH ALIGN=LEFT>xb_ex_v3_create_dbf<TD>Example program to create V3 DBF file
-<TR><TH ALIGN=LEFT>xb_ex_v3_upd_dbf<TD>Example program to update V3 DBF file
-<TR><TH ALIGN=LEFT>xb_ex_v4_create_dbf<TD>Example Program to create V4 DBF file
-<TR><TH ALIGN=LEFT>xb_ex_v4_upd_dbf<TD>Example program to update V4 DBF file
+<TR><TH ALIGN=LEFT>xb_dumprecs<TD>This program dumps records for an XBase file
 <TR><TH ALIGN=LEFT>xb_execsql<TD>This program executes SQL statements
 <TR><TH ALIGN=LEFT>xb_pack<TD>This program packs (removes deleted records) from a DBF database file
 <TR><TH ALIGN=LEFT>xb_undelall<TD>This program undeletes all deleted records in a dbf file
 <TR><TH ALIGN=LEFT>xb_zap<TD>This program removes all records from a DBF file
 </TABLE></CENTER>
 <br><br>
+
+
 <hr>
 <p><img src="xbase.jpg"><br><hr>
 </BODY>
diff --git a/docs/html/xbc1.htm b/docs/html/xbc1.html
index bb04aec..c07e5f6 100755
--- a/docs/html/xbc1.htm
+++ b/docs/html/xbc1.html
@@ -4,7 +4,7 @@
 <BODY BGCOLOR=#FFFFFF>
 
 <h1><p align="center">Getting Started</p></h1>
-<p align="center">Chapter Updated 11/21/22</p>
+<p align="center">Chapter Updated 12/09/22</p>
 
 <hr><h2>Overview</h2>
 
@@ -25,7 +25,7 @@ with DBase III (TM) and DBase IV (TM) version data files and indices
 *.DBF (data), *.NDX (single tag index), *.MDX (multi tag index) and
 *.DBT (memo).<br><br>
 
-Version 4.x.x is a major rewrite of the library to strenghen error
+Version 4.x.x is a major rewrite of the library to strengthen error
 processing and bring consistency across modules.  It includes updates
 to the locking process and also includes a module to support MDX multi
 tag indices.<br><br>
@@ -35,6 +35,20 @@ and that code will be re-incorporated into the latest version in the
 future.
 
 
+<br><br>
+<B>Why use the Xbase library? </B>
+The DBF file format is a ubiquitous industry standard with
+widespread usage and application.  Using this standard file format removes any 
+<em>vender specific</em> locks that bind you to a particular platform.
+Additionally, with Xbase64 only the options needed can be compiled into or out of the library
+to provide a custom configuration specific to project requirements.
+For a small footprint, locking, memo fields and indices could be excluded from
+the library build which would reduce the library size.
+This tool is usefull for small to medium sized apps that don't need all the 
+overhead, sophistication and cost of a complex client server configuration.
+The Xbase library is designed to be flexible in which options can be compiled
+into or out fo the library and also which environments it can be run on. 
+
 
 <br><br><br>
 
@@ -71,6 +85,7 @@ Xbase64 defines the following field types:<br><br><br>
 <CAPTION ALIGN=TOP><h3>Field Types</h3></CAPTION>
 <TR ALIGN=BASELINE>
 <TR><TH ALIGN=LEFT>Type<TD>Description
+<TR><TH ALIGN=LEFT>xbBool<TD>Contains xbTrue (0)  or xbFalse (1)
 <TR><TH ALIGN=LEFT>xbInt16<TD>16 bit int
 <TR><TH ALIGN=LEFT>xbUInt16<TD>16 bit unsigned int
 <TR><TH ALIGN=LEFT>xbInt32<TD>32 bit int
@@ -178,8 +193,7 @@ Maximum index key length - 100 bytes<br>
 Maximum .DBT file memo block size - 32256<br>
 Maximum expression result length - 100 bytes<br>
 Maximum NDX index key length - 100 bytes<br><br>
-<hr><br><br>
-
+<hr><br>
 <p><img src=xbase.jpg><br><hr>
 </BODY>
 </HTML>
diff --git a/docs/html/xbc10.htm b/docs/html/xbc10.html
index 04f5158..04f5158 100755
--- a/docs/html/xbc10.htm
+++ b/docs/html/xbc10.html
diff --git a/docs/html/xbc11.htm b/docs/html/xbc11.html
index 4230f3f..4230f3f 100755
--- a/docs/html/xbc11.htm
+++ b/docs/html/xbc11.html
diff --git a/docs/html/xbc12.htm b/docs/html/xbc12.html
index f9fe114..a40c7e0 100755
--- a/docs/html/xbc12.htm
+++ b/docs/html/xbc12.html
@@ -1,9 +1,9 @@
 <!DOCTYPE HTML PUBLIC>
 <HTML>
-<TITLE>Xbase DBMS Chapter 8</TITLE>
+<TITLE>Xbase DBMS Chapter 12</TITLE>
 <BODY BGCOLOR=#FFFFFF>
 <H1><p align="center">Record and File Locking</p></H1>
-<p align="center">Chapter Updated 11/29/22</p><hr>
+<p align="center">Chapter Updated 12/13/22</p><hr>
 
 <h3>Locking Overview</h3>
 
@@ -15,9 +15,12 @@ can cause the files to become inaccurate and unusable.<br><br>
 
 Automatic record locking is on by default in the Xbase64 library. To disable it,
 use method xbXBase::DisableDefaultAutoLock() and to enable it, use method xbXBase::EnableDefaultAutoLock().
-
-Locking can also be enabled / disabled at the table level with with xbDbf::SetAutoLock().
-
+<br><br>
+Locking can also be enabled / disabled at the table level with with xbDbf::SetAutoLock().<br><br>
+If autolocking is disabled and the code base is being used in a multi user environment, it is 
+up to the application program to verify the needed locks are set as there is no checking or
+setting any locks if autolocking is turned off.  It is only safe to turn off the autolocking functionality
+if the library is being used in a single user environment.
 
 <br><br>
 The current Xbase64 record locking logic is modeled after DBase (tm) V7 locking.
@@ -55,17 +58,28 @@ be simultaneously opened with a program on the Unix box.  That could cause some
 In Unix, a program can not lock a file so another process can not access it.<br>
 In Windows, a program can lock a file so another process can not access it.<br>
 DBase(tm) supports routines to open files exclusively, preventing other users from opening a file.<br>
+Locking on the Mac/Apple platform only works on NFS shares.  It does not work with SMB shares.
 
 <br><h3>Samba settings</h3>
 
 If you will be using Samba on Linux/Unix and sharing files between Linux and Windows machines, 
 you will need to disable oplocks. In the smb.conf file, set:<br>
-<h4>oplocks = no</h4>
+<br>
+[sharename]<br>
+oplocks = False<br>
+level2 oplocks = False
+
+
+<br><h3>iLockFlavor</h3>
+
+The library was constructed in a manner so that it could be updated to support alternate lock "flavors".
+The 4.x.x library is built to mirror the DBase locking, but the structure is in place to expand to other locking 
+types if needed.
 
 
 
 
-<br> 
+<br><br><br>
 <hr><br>
 <p><img src="xbase.jpg"><br><hr>
 </BODY>
diff --git a/docs/html/xbc13.htm b/docs/html/xbc13.html
index 9f51a85..9f51a85 100755
--- a/docs/html/xbc13.htm
+++ b/docs/html/xbc13.html
diff --git a/docs/html/xbc14.htm b/docs/html/xbc14.htm
deleted file mode 100755
index fdcf949..0000000
--- a/docs/html/xbc14.htm
+++ /dev/null
@@ -1,12 +0,0 @@
-<!DOCTYPE HTML PUBLIC>
-<HTML>
-<TITLE>Xbase DBMS Chapter 14</TITLE>
-<BODY BGCOLOR=#FFFFFF>
-<H2><p align="center">CDX Indices</p></H2>
-<p align="center">Chapter Updated 11/30/22</p><hr>
-
-<h3>Pending SQL module development.</h3>
-
-<hr>
-</BODY>
-</HTML>
diff --git a/docs/html/xbc14.html b/docs/html/xbc14.html
new file mode 100755
index 0000000..2c086df
--- /dev/null
+++ b/docs/html/xbc14.html
@@ -0,0 +1,113 @@
+<!DOCTYPE HTML PUBLIC>
+<HTML>
+<TITLE>Xbase DBMS Chapter 14</TITLE>
+<BODY BGCOLOR=#FFFFFF>
+<H2><p align="center">CDX Indices</p></H2>
+<p align="center">Chapter Updated 12/08/22</p><hr>
+
+<h3>SQL Command Status</h3>
+
+Development of SQL support is still underway and very preliminary.  As of the 4.0.3 version, the following SQL commands 
+are available.<br><br>
+The SQL commands are modeled after industry standard SQL specifications and do what you would expect an SQL command to do.
+<br>
+Use of <em>[brackets]</em> in this chapter identifies optional components of a given command.
+<br><br>
+<hr>
+<h3>ALTER TABLE</h3>
+Expected format:<br>
+ALTER TABLE tablename.DBF RENAME TO newtablename.DBF
+<br><br>
+<hr>
+<h3>CREATE INDEX</h3>
+Expected format to create an Dbase 3, NDX index:<br>
+CREATE INDEX ixname.NDX ON tablename.dbf ( EXPRESSION ) [ASSOCIATE]
+
+<br><br>
+Expected format to create an Dbase 4, tag on an MDX index:<br>
+CREATE [UNIQUE] INDEX tagname ON tablename.DBF ( EXPRESSION ) [DESC] [FILTER  .NOT. DELETED()]
+
+<br><br>
+The ASSOCIATE parameter is specific to Xbase64 library, it is used to associate non production (NDX) index file to a dbf 
+file so it will be automatically opened with the dbf file whenever the dbf file is opened by the xbase64 routines.
+<br><br>
+The [ASSOCIATE] parameter is not used with MDX production indices
+<br><br>
+Xbase first looks for ".NDX" in the file name to determine if an NDX index should be created.
+If .NDX is not in the filename, it looks in the uda for "IXTYPE" for either NDX or MDX to 
+detmermine the index type to create. if IXTYPE is not found, it creates an MDX tag.
+<br><br>
+The optional DESC parameter defines an entire index key as descending.  This is
+different than other SQL implementations where specific fields can be descending.
+<br><br>
+The optional FILTER parameter is specific to the XBASE64 library, is it used to assign a filter to a tag in an 
+MDX style index.  Everything to the right of the keyword FILTER is considered part of the filter.
+<br><br>
+The original DBASE indices used to '+' to create an index on more than one field 
+<br>ie:  FIELD1+FIELD2+FIELD3
+<br><brSQL uses commas: ie:   FIELD1, FIELD2, FIELD3
+<br>
+The Xbase library supports either '+' or ',' when creating mutli field indices.
+<br><br>
+<hr>
+
+
+
+<h3>CREATE TABLE</h3>
+Expected format:<br>
+CREATE TABLE tablename.dbf (Field1 CHAR(10), INTFLD1 INTEGER, ... )
+<br><br>
+<table border=1>
+<tr><th>SQL TYPE</th><th>XBASE Field Type</th></tr>
+<tr><td>SMALLINT</td><td>NUMERIC(6,0)</td></tr>
+<tr><td>INTEGER</td><td>NUMERIC(11,0)</td></tr>
+<tr><td>DECIMAL(x,y)</td><td>NUMERIC(x+1,y)</td></tr>
+<tr><td>NUMERIC(x,y)</td><td>NUMERIC(x,y)</td></tr>
+<tr><td>FLOAT(x,y)</td><td>FLOAT(x,y)</td></tr>
+<tr><td>CHAR(n)</td><td>CHARACTER(n)</td></tr>
+<tr><td>DATE</td><td>DATE</td></tr>
+<tr><td>VARCHAR</td><td>MEMO</td></tr>
+<tr><td>LOGICAL</td><td>LOGICAL</td></tr>
+</table>
+<br>
+<hr>
+
+
+<h3>DELETE</h3>
+Expected format:<br>
+DELETE FROM tablename.DBF [WHERE expression]
+<br><br>
+<hr>
+
+
+<h3>DROP INDEX</h3>
+Expected format:<br>
+DROP INDEX [IF EXISTS] ixname.NDX ON tablename.DBF<br>
+DROP INDEX [IF EXISTS] tagname ON tablename.DBF<br>
+<br>
+
+
+<hr>
+<h3>DROP TABLE</h3>
+Expected format:<br>
+DROP TABLE [IF EXISTS] tablename.DBF
+<br>
+<hr>
+<h3>INSERT</h3>
+Expexted format:<br>
+INSERT INTO tablename (field1, field2, field3,...) VALUES ( 'charval', numval, 'what is the correct odbc date format to use? CCYYMMDD');
+<br><br>
+<hr>
+<h3>SET</h3>
+Used to set a variable name<br>
+Expected format:<br>
+SET ATTRIBUTE = DATAVALUE<br>
+SET ATTRIBUTE = ^     (to delete an entry) <br>
+<br>
+<hr><br><br>
+<p><img src=xbase.jpg><br><hr>
+
+</BODY>
+</HTML>
+
+
diff --git a/docs/html/xbc15.html b/docs/html/xbc15.html
new file mode 100755
index 0000000..136724d
--- /dev/null
+++ b/docs/html/xbc15.html
@@ -0,0 +1,51 @@
+<!DOCTYPE HTML PUBLIC>
+<HTML>
+<TITLE>Xbase DBMS Chapter 15</TITLE>
+<BODY BGCOLOR=#FFFFFF>
+<H2><p align="center">Class Inventory</p></H2>
+<p align="center">Chapter Updated 12/24/22</p><hr>
+<br>
+<center><h3>Class Descriptions</h3></center>
+
+<center>
+<table border=1>
+<tr><th>Class</th><th>Description</th></tr>
+<tr><td>xbBcd</td><td>Supports binary coded deciemal data</td></tr>
+<tr><td>xbDate</td><td>Support date operations on a given date formatted as YYYYMMDD</td></tr>
+<tr><td>xbDbf</td><td>Base class for DBF file handling. If you are adding support for a new file type, <br>derive new file type class from this.</td></tr>
+<tr><td>xbDbf3</td><td>Derived from xbDbf, supports DBase V3 files</td></tr>
+<tr><td>xbDbf4</td><td>Derived from xbDbf, supports DBase V4 files</td></tr>
+<tr><td>xbExp</td><td>Class for supporting expression logic</td></tr>
+<tr><td>xbExpNode</td><td>Class definition of a single node, utilized by xbExp</td></tr>
+<tr><td>xbFile</td><td>Main file class.  If you are porting this library to another platform, start here</td></tr>
+<tr><td>xbFilter</td><td>Supports filters</td></tr>
+<tr><td>xbIx</td><td>Base class for index file support. If you are adding support for a new index type, <br>derive new index type class from this.</td></tr>
+<tr><td>xbIxNdx</td><td>Derived from xbIx, supports NDX style indices.</td></tr>
+<tr><td>xbIxMdx</td><td>Derived from xbIx, supports MDX style indices</td></tr>
+<tr><td>xbLinkList</td><td>Class supporting linked list functionality</td></tr>
+<tr><td>xbLinkListOrd</td><td>Class supporting ordered linked list functionality</td></tr>
+<tr><td>xbLinkListNode</td><td>Class defining one node, used by xbLinkList and xbLinkListOrd</td></tr>
+<tr><td>xbLog</td><td>Class supporting general log file activity</td></tr>
+<tr><td>xbMemo</td><td>Base class for supporting memo (.DBT)  files. If you are adding support for a new memo type, <br>derive new memo type class from this.</td></tr>
+<tr><td>xbMemoDbt3</td><td>Derived from xbMemo, supports V3 Memo files</td></tr>
+<tr><td>xbMemoDbt4</td><td>Derived from xbMemo, supports V3 Memo files</td></tr>
+<tr><td>xbSql</td><td>Supports SQL access</td></tr>
+<tr><td>xbSsv</td><td>Base class, shared system values</td></tr>
+<tr><td>xbString</td><td>String handling class</td></tr>
+<tr><td>xbTag</td><td>Class to support index tags</td></tr>
+<tr><td>xbTblMgr</td><td>Class used internally in the library for managing multiple open files/tables</td></tr>
+<tr><td>xbUda</td><td>Class for supporting fields for the xbSql functions.  Stands for User data area</td></tr>
+<tr><td>xbXBase</td><td>Class to tie everything together.  Every application program starts with one of these</td></tr>
+</table>
+</center>
+
+<hr>
+<br><br>
+Fix me...
+<p><img src="Xbase64ClassDiagram.jpg"><br>
+
+<br><br>
+<hr>
+<p><img src="xbase.jpg"><br><hr>
+</BODY>
+</HTML>
diff --git a/docs/html/xbc2.htm b/docs/html/xbc2.html
index 72a6009..72a6009 100755
--- a/docs/html/xbc2.htm
+++ b/docs/html/xbc2.html
diff --git a/docs/html/xbc3.htm b/docs/html/xbc3.html
index f2f4a1d..f2f4a1d 100755
--- a/docs/html/xbc3.htm
+++ b/docs/html/xbc3.html
diff --git a/docs/html/xbc4.htm b/docs/html/xbc4.html
index f494629..a0275ed 100755
--- a/docs/html/xbc4.htm
+++ b/docs/html/xbc4.html
@@ -3,7 +3,7 @@
 <TITLE>Xbase DBMS Chapter 4</TITLE>
 <BODY BGCOLOR=#FFFFFF>
 <H1><p align="center">Date Processing</p></H1>
-<p align="center">Chapter Updated 2/12/99</p><hr>
+<p align="center">Chapter Updated 12/09/22</p><hr>
 
 The objective of this chapter is to provide information regarding 
 the basic concepts of date arithmetic and supply generic
@@ -56,7 +56,8 @@ To calculate a future or past date, convert the base date to a Julian date,
 add (or subtract) the number of days necessary to (from) it and convert the
 julian date back to a Gregorian date.<br><br>
 
-The Julian date routines use a base date of 01/01/0001.<br><br>
+The Julian date routines use a base date of 01/01/0001. DBase julian Dates have an offset of 1721425L, reason unknown.
+<br><br>
 
 <h2>Gregorian Dates</h2>
 
diff --git a/docs/html/xbc5.htm b/docs/html/xbc5.html
index f798125..9708b17 100755
--- a/docs/html/xbc5.htm
+++ b/docs/html/xbc5.html
@@ -3,7 +3,7 @@
 <title>Xbase DBMS Chapter 5</title>
 <body bgcolor=#FFFFFF>
 <h1><p align="center">Expression Handling<br></h1>
-<p align="center">Chapter Updated 11/27/22</p><hr>
+<p align="center">Chapter Updated 12/26/22</p><hr>
 
 <h3>Overview</h3>
 
@@ -39,7 +39,6 @@ If an expression will be processed repeatedly, it is best to pre-parse the
 tree using <em>ParseExpression</em>, then for each new call to the expression, 
 execute method <em>ProcessExpression</em> which processes the tree. 
 
-
 <h3>Expression Return Types</h3>
 Expressions will return a type of CHAR, NUMERIC, DATE or LOGICAL.<br><br> 
 
@@ -72,7 +71,7 @@ slightly more efficient to call the C++ functions directly, rather than
 execute the expression parsing routines.<br><br>
 
 To add a new function, find a function that is similar to what you need, copy
-the code and modify xbxbase.h, xbfuncs.cpp, xbexp.cpp and xb_test_expression.cpp.
+the code and modify xbxbase.h, xbfuncs.cpp, xbexp.cpp and xb_test_expression.cpp.<br><br>
 
 
 <table border=1>
@@ -116,7 +115,7 @@ the code and modify xbxbase.h, xbfuncs.cpp, xbexp.cpp and xb_test_expression.cpp
 <tr><td>SQRT</td><td>N</td><td>Calculate square root</td></tr>
 <tr><td>STOD</td><td>D</td><td>Convert 8 byte CCYYMMDD date to date</td></tr>
 <tr><td>STR</td><td>C</td><td>Convert number to character string</td></tr>
-<tr><td>STRZERO</td><td>C</td><td>Convert number to character string with leading zeroes</td></tr>
+<tr><td>STRZERO</td><td>C</td><td>Convert number to character string with leading zeroes. Clipper Function.</td></tr>
 <tr><td>SUBSTR</td><td>C</td><td>Extract portion oif one string from another string</td></tr>
 <tr><td>TRIM</td><td>C</td><td>Trim left and right sides of a string</td></tr>
 <tr><td>UPPER</td><td>C</td><td>Conver lower case to upper case</td></tr>
@@ -145,8 +144,6 @@ of database->fieldname.
 <tr><td>DATE</td><td>{10/07/60} or {02/09/1989}</td></tr>
 </table>
 
-
-
 <br><br>
 <h3>Expression Operators</h3>
 <table border=1>
@@ -187,10 +184,11 @@ of database->fieldname.
 </table>
 
 <br><br>
-<h3>Examples</h3>
+<h3>Example Expressions</h3>
 <li>CUSTOMERS->LNAME + ", " + CUSTOMERS->FNAME
 <li>LNAME + ", " + FNAME
 <li>STARTDT + 90
+<li>DATE() - 7
 <li>YEAR( TODAY() )
 <li>IIF( "A" = "N", "true result", "false result" )
 <li>IIF( "A" = "N" .OR. 2 > 1 , "true result", "false result" )
@@ -199,6 +197,11 @@ of database->fieldname.
 <br><br>
 
 
+<h3>Example program</h3>
+For an example on how to use the expression logic, see program 
+<em>src/examples/xb_ex_expression.cpp</em>.
+<br><br>
+
 <hr>
 <p><img src="xbase.jpg"><br><hr>
 </BODY>
diff --git a/docs/html/xbc6.htm b/docs/html/xbc6.html
index a7e1746..094545f 100755
--- a/docs/html/xbc6.htm
+++ b/docs/html/xbc6.html
@@ -3,7 +3,7 @@
 <TITLE>Xbase DBMS Chapter 6</TITLE>
 <BODY BGCOLOR=#FFFFFF>
 <H1><p align="center">Index Overview</p></H1>
-<p align="center">Chapter Updated 11/27/222</p><hr>
+<p align="center">Chapter Updated 12/09/22</p><hr>
 
 The objective of this chapter is to provide information regarding 
 the basic concepts of index processing for the Xbase library.<br><br>
@@ -27,6 +27,13 @@ Each index file contains one or more tags depending on the file type.  Each tag
 and has characteristics:  Sort order (ASC or DESC), unique or not unique and some formats support filtering. 
 Each open table (dbf file) has an "active tag" for database operations.
 
+<h2>Index processing design</h2>
+
+The library is construcuted to handle index files with multiple tags per file.  Single tag files like the NDX indices
+are treated as a multi tag file, but there is only one tag.  This allows for maximum flexibility for future
+additional index types.
+
+
 
 <h2>Index updates</h2>
 
@@ -129,7 +136,16 @@ The library automatically updates all tags in all open index files.
   <td>xbDbf::SetCurTag</td><td>Set current tag.</td>
 </tr>
 </table>
+<br><br>
+<h2>Internal Data Storage</h2>
 
+<table border=1>
+<tr><th>Type<th>Stored in DBF as</th><th>Stored in NDX as</th><th>Stored in MDX as</th></tr>
+<tr><td>C</td><td>Character data</td><td>Character data</td><td>Character data</td></tr>
+<tr><td>F</td><td>Text numbers</td><td>xbDouble</td><td>xbBcd</td></tr>
+<tr><td>N</td><td>Text numbers</td><td>xbDouble</td><td>xbBcd</td></tr>
+<tr><td>D</td><td>Text YYYYMMDD</td><td>xbDouble Julian</td><td>xbDouble Julian</td></tr>
+</table>
 <br><br>
 <hr>
 <p><img src="xbase.jpg"><br><hr>
diff --git a/docs/html/xbc7.htm b/docs/html/xbc7.html
index 20a60de..20a60de 100755
--- a/docs/html/xbc7.htm
+++ b/docs/html/xbc7.html
diff --git a/docs/html/xbc8.htm b/docs/html/xbc8.html
index cb47657..fcc461c 100755
--- a/docs/html/xbc8.htm
+++ b/docs/html/xbc8.html
@@ -3,7 +3,7 @@
 <TITLE>Xbase DBMS Chapter 8</TITLE>
 <BODY BGCOLOR=#FFFFFF>
 <H2><p align="center">MDX Indices</p></H2>
-<p align="center">Chapter Updated 11/28/22</p><hr>
+<p align="center">Chapter Updated 12/02/22</p><hr>
 
 The objective of this chapter is to provide information regarding the
 basic concepts of how .MDX index files work in the Xbase environment.<br><br>
diff --git a/docs/html/xbc9.htm b/docs/html/xbc9.html
index 297a702..afcd2fa 100755
--- a/docs/html/xbc9.htm
+++ b/docs/html/xbc9.html
@@ -175,5 +175,6 @@ than the search key given.
 <hr>
 <A HREF="mailto:bob@#synxis.com">
 Author: Bob Cotton - bob@synxis.com</A><br>
+<p><img src="xbase.jpg"><br><hr>
 </BODY>
 </HTML>