This is a library supporting system and application configuration stored in a flat file format based on the JSON format. JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language, Standard ECMA-262 3rd Edition - December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language. The jcnf library is designed to be used stand alone by applications, or as a template for a back end to Elektra, as an alternative to other simple flat file formats such as .ini It makes use of Lloyd Hilaiel's YAJL to do the generation and parsing of the JSON configuration files. - Graeme Gill.