There are four environment variables that can be used to specify the location of source files. The IPFC environment variable is used to specify where the IPF support files (such as the *.NLS files) are stored. The IPFCIMBED environment variable is used to search for files imbedded with the .im macro. The IPFCARTWORK environment variable is used to specify the location of artwork files and artlink files. The TMP environment variable is used to indicate where the compiler should store the intermediate files it creates during the compilation.

The IPFC environment variable has been enhanced to allow multiple paths.

Note: IPFCARTWORK=artwork and linkfile path (used for :artwork.)
IPFCIMBED=imbed file path (used for .im)
IPFC=IPFC file path (location of APSYxxxx.APS, IPF*.NLS)
TMP=temporary file path