Descriptor HISTORY

The descriptor HISTORY is a standard descriptor even though it is not in the calling sequence of STIPUT or STIGET. If you work on an input frame and produce a new output frame always update this descriptor. E.g.:

 		 CALL STIGET(INFRAME, ..., IMFIN, ISTAT) 
		 CALL STIPUT(OUTFRAME, ..., IMFOUT, ISTAT) 
		 .... compute ... 
		 CALL DSCUPT(IMFIN, IMFOUT, MYHIST, ISTAT)

where MYHIST is a character expression of 80 characters; e.g. filled via MYHIST(1:) = `subframe of'//INFRAME//' ' if you just extract a subframe from the input frame. The routine DSCUPT is also included in the MIDAS library (see below).