You could consider this another in the Small Programming Enhancement (SPE) series.
You’ll probably also notice I’ve been doing quite a lot of REXX programming recently.
Anyway, here’s a tip for refactoring code I like. Suppose you have a line of code: norm_squared=(i-j)*(i-j)
that you want to turn into a function. No biggie: norm2: procedure
parse arg x,y
return...
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rexx