The split-screen editor is a very useful tool for comparing programs-even across instances. However, sometimes it is useful to be able to see the differences as a whole, in the style of comparing versions of programs.
In 46C (and possibly earlier, though not earlier than 31I), you can use the RSVRSRS3 to do this.
Simply enter the names of the programs in the OBJNAME and OBJNAM2 parameters, enters 'REPS' into OBJTYP1 and OBJTYP2. If OBJNAME is in a remote system, enter the logical name of the system in LOG_DST1. If OBJNAM2 is in a remote system, enter that systems name in LOG_DEST.
You must set up the remote systems names in SM59 - r/3 connections.