I just ran across a wierd problem with the abs() function in Arexx.
Try "say abs(-1)" from Wshell or RX "say abs(-1)" from Ashell (I can't say
what happens from a normal CLI or Newshell, I don't have either on my HD).
The result is a linefeed. "say abs(-1)+0" or "x=abs(-1);say x" works as
expected. Interesting problem 😉