-2 <parent jobname>
The -2 switch is normally only used internally (e.g. by Xcall AMOS) to indicate that the session being launched is a "child" of the specified parent jobname. The main consequence of this is that the PLYJOB and GETJTB subroutines will be able to identify the parent in the JOBATT field.
The miame.ini setting SBR=AMOSJOB1 will cause JOBNAM to return the parent jobname specified by the –2 <parent jobname> switch, rather than the child job name.