The extrusion.CSV file merely indicates what directory below it to use. Suppose you have two directories - ABS and PLA - and each directory has the full set of CSV files. In the extrusion.CSV file, which is in the parent directory, you would say "Profile selection: PLA" and it would use the files in the PLA directory, and likewise for ABS.
You can simply create your own profiles outside of skeinforge by just copying these files into a new directory. Each directory, however, should have the full set of files.
Edited 1 time(s). Last edit at 01/13/2014 12:42AM by jbernardis.