This is a rexx function provided by PPWIZARD. This routine (like all PPWIZARD extensions) can be used with any operating system supported by PPWIZARD.
This routine is passed a single parameter which is the name of a file to be searched for. If it exists or it is found then it's filename is returned (otherwise "" is returned).
Note that if an input file can't be located (relative to the current directory), the following environment variables paths will also be searched (in order):
After searching the above locations the directory PPWIZARD is located in is also examined.