It ain't easy! Wish I was talented enough to challenge the big guns. smiley
And for all those reading this, don't be shy, write your own challenges and post them.
For years I had this neat program that would step through many drawings doing the same thing (plotting , updating blocks, filling in border, even erasing the exploded border, looking up what the atts should be, Reinserting border and filling in atts and more)and then going on to the next drawing.
Now the sitation is more complicated, drawings don't open and close the same way, and there is paperspace and all the tabs, and lisp only works in the current space/tab :realmad: (some of those bugs they fixed were features)
So the challange is to have lisp(possibly with script files) take a list of drawings ( in an ascii file) and run through all of them and run a standard lisp in each drawing and each tab (or a selected list?) presuming that the last person to save the file left it any which way.
Oh! and it needs to run without attention on all drawings from a single start command.
I can post my original if it would be usefull.