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Question: re-edit a proc after screen cleared and subs

Question:re-edit a proc after screen cleared and subs

Christopher2222 6005 Maple
proc subs
October 23 2011
1

How do I edit a large proc to replace a couple of lines or add a few more if I don't save it and the screen was cleared?  Am I out of luck and have to retype it all back in?

And how do I substitute in a proc n_pts<5 to n_pts<5  or say substitute i=50 to i=30 .  I'm stuck with the operators.  I thought using delayed evaluation would work.  ie/  newproc:=subs( 'i=5' = 'i=30' , eval(newproc))
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