#ignore
tests recursive meta composition, z-level manipulation, transformations, and
repeat up/down

#dig label(center_tile) start(2 2) hidden()

,d,
#dig label(even_up) start(2 2) hidden()

u,,u
#dig label(even_down) start(2 2) hidden()
,j

,j
#meta label(even) hidden()
/even_up
/even_down
#meta label(odd) hidden()
/even transform(rotcw)
#meta label(twoz) hidden()
/even
#>
/odd
#meta label(fourz) hidden()
/twoz
#>2
/twoz
#>
/center_tile repeat(up 4)
#meta label(dig)
/fourz repeat(>3)