In early 90th I was an OS/2 fanboy, I did a lot of automation in REXX. I'm not sure REXX syntax resembles PL/I which was then heavily used at the place I worked on "big iron". PL/I used to be more verbose, uppercased and aming SQL database work, methinks. REXX, on the other hand, was more like Perl and I felt quite comfortable with Perl when I switched OS/2 to FreeBSD. :)