ABG
9
Mathematicians often use the letter n to denote an unknown whole number.
How would the code look for the case where you did not know ahead of time how many columns were involved, say 7 columns?
Taking that approach drives the design towards using more lists, rather than enumerating the columns and their combinations 1 by 1.
Scan the blocks in this sample app, and look for number blocks that contain anything other than 0,1,-1. Aside from a Fontsize setting, there are none.
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