⍝ 1: Let's Split!
 split←(0>⊣)⌽((⊂↑),(⊂↓))
 ⍝ 2: Character Building
 characters←{(~⍵∊127+⍳64)⊂⍵}
 ⍝ 3: Excel-lent Columns
 columns←26⊥64-⍨⎕UCS
 ⍝ 4: Take a Leap
 leap←1 3∊⍨(0+.=400 100 4∘.|⊢)
 ⍝ 5: Stepping in the Proper Direction
 stepping←{(⊃⍵)+(-×-/⍵)×0,⍳|-/⍵}
 ⍝ 6: Please Move to the Front
 movefront←{⍵[⍋⍺≠⍵]}
 ⍝ 7: See You in a Bit
 bits←{f←⍸∘⌽(2∘⊥⍣¯1)⋄∧/(f⍺)∊f⍵}
 ⍝ 8: Zigzag Numbers
 zigzag←∧/2=∘|2-/∘×2-/(10∘⊥⍣¯1)