At 17:56 +1100 on 10/08/2010, robin wrote about Re: TRT:
Quite useful if desiring to remove trailing blanks from a record. This was done in the days of punch cards, in order to speed up data transfers to/from disk, and to reduce disk storage requirements. Alas, in those days, there was no TRTR instruction.
As I commented in a prior reply, you can use a TR (or later a MVCI) to reverse the order of the bytes (while copying into a workarea). Then using a TRT on the work area finds the last non-blank and you can then use the location to find the offset into the original version. This was, I think, the method used by HASP and JES2 to reduce print line lengths by stripping the trailing blanks.
