colnames.h	- defines column specs for SDAS fit table
curfitdef.h	- definitions used in linear fitting tasks
extnstr.x	- extracts n-th substring from a dictionary string
getfit.x	- read one line from fit table
nlfit1.x	- used by both non-linear fitting tasks (nfit1d, ngaussfit)
nlwtdb.x	- writes non-linear fit results to table
opendb.x	- opens table for both input and output
prepdata.x	- cleans input values from garbage, computes data errors
rdcurves.x	- data input routines (from the gfit1d original)
tqsort.x	- general quick sort 
