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+Collection of numerical routines used by various other
+(mainly color) code.
+
+Included are:
+
+numsup Error handling, vector/array allocation, macros
+dnsq Non-linear equation solver
+powell Powell and Conjugate Gradient multi dimentional minimiser
+ludecomp LU decomposition matrix solver
+svd Singular Value decomposition matrix solver
+zbrent 1 dimentional brent root search
+rand Random number generators
+sobolo Sobol sub-random vector sequence generator
+