Syntax:
set loadpath {"pathlist1" {"pathlist2"...}} show loadpath
Path names may be entered as single directory names, or as a list of path names separated by a platform-specific path separator, eg. colon (':') on Unix, semicolon (';') on DOS/Windows/OS/2/Amiga platforms. The show loadpath, save and save set commands replace the platform-specific separator with a space character (' ') for maximum portability.
If the environment variable GNUPLOT_LIB is set, its contents are
appended to loadpath. However, show loadpath prints the contents
of user defined loadpath and system loadpath separately. Also, the
save and save set commands save only the user specified parts of
loadpath, for portability reasons.