I tried to copy one of my old REXX programs to VM/370 but it didn’t like some statements. EXECIO for example and I use that a lot. I assumed it wasn’t supported. However someone implemented it for VM/370. But it still failed for me. So I need to look into it. If I could find 1 simple program that uses the DISKR option it would probably help a lot. I was trying things yesterday and it was complaining about the FINIS option. Then I could almost swear I changed nothing and instead I was getting +++ RC(-3) +++, which means “No CMS command issued from EXEC was found with this name, or an invalid function occurred when issuing the SET or QUERY command from EXEC with IMPCP active.”