getkeys.icn: Procedures to get keys for a gettext file

link getkeys
May 2, 2001; Richard L. Goerwitz
Requires: UNIX (maybe MS-DOS; untested)
See also: gettext.icn
This file is in the public domain.

Getkeys(FNAME) generates all keys in FNAME in order of occurrence.
See gettext.icn for a description of the requisite file structure
for FNAME.