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

#dig label(border) start(3 3) hidden()
d(2x1),,,,d(1x3)



d(1x-4),,,,d(-2x1)
#dig label(center_tile) start(3 3) hidden()


,,d
#dig label(even_up) start(3 3) hidden()


,u,,u
#dig label(even_down) start(3 3) hidden()

,,j

,,j
#meta label(even) hidden()
/border
/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)