BEGINLIBPATH
From EDM2
This variable prepends LIBPATH. That is, all paths listed in BEGINLIBPATH are added in front of the LIBPATH entries. This is normally not used in CONFIG.SYS, but is useful on the command line and in scripts, where setting a particular LIBPATH would not otherwise be possible.
SET BEGINLIBPATH=<path>;<path2>
Parameters
Multiple entries must be delimited by a semicolon.