PgmHandle (ULONG)
The program handle identifies the program in the installation file to be started, the program title, the session type, and the initial window size and position. However, information may be specified with DosStartSession to override the information in the installation file for this invocation of the program.
DosStartSession does not support program groups.
Refer to "Program Handle Considerations" in the Remarks secion of DosStartSession for additional information about program handles.