CMD.EXE
From EDM2
With this statement you can 'delay' the initialisation of the presentation manager. The effect is the same as if you would press 'ALT F1' during boot (as long 'OS/2' is visible on the left upper corner of the display) and then selecting the command-line option (F2 in Warp 4). After typing 'exit' the command-line will be closed and boot-up finishes. Useful if you have to delete locked files (specially locked DLLs).
CALL=\OS2\CMD.EXE <parameters>
ex:
CALL=C:\OS2\CMD.EXE /Q /C C:\MPTN\BIN\MPTSTART.CMD >NUL
For starting another instance of the command processor and executing programs
See RUN CACHE386.EXE and CALL MPTSTART.CMD