http://hobbes.nmsu.edu/cgi-bin/...
"This DLL enhances REXX in multiple ways. Fast 6bit<-> 8bit de/encoding (e.g. base64). Fast (HTML) template processing. Picture identification. Session functions (setting positions of PM windows and putting them in focus). Checking for locked desktop. Extensive Date/Time calculation. (NEW) - XtraEnumSessions (NEW) - Extensive file/directory functions For OS/2 / ecomStation."
Source: OS2.jp