Funny, I worked with EDL as well. I thought I was the only person left on earth that even remembered it!

I know a company that still uses COBOL. It was their language standard because the managers had written in it prior to becoming managers. The AS/400 still has a COBOL compiler and they still add new featrues to it. They also support RPG in several different flavors. I've developed many programs in COBOL and RPG. They are like any other language, write the instruction properly and it will produce the expected results. COBOL is very wordy compared to most languages today and that seems to be its biggest downfall.