cubically.md

Any size

If (face[x] || face[y])

?x!y{...}

Found by: @TehPers
Significance: There's no builtin way to do if (x || y)
Example: ?6!7{%0} -> if notepad or input buffer is truthy, print the 0th face sum

Decrement notepad by 1

*1-1/1

Found by: Kamil Drakari
Significance: Decrements the notepad by 1 as long as the left face is nonzero

Increment notepad by 1

*1+1/1

Found by: MD XF (kind of)
Significance: Increments the notepad by 1 as long as the left face is nonzero

Loop 5 times

RLUD'RLUD'( RLUD'RLUD')8

Found by: MD XF
Significance: Loops 5 times. Removing the second RLUD' within the loop loops 10 times. (These are hard to do without the notepad.)