n
set rn to [rz]
f
increase [rn] by 1
b
decrease [rn] by 1
k
set [ri] to [rz], store ret
;
pop ret to ri
s
set [rn] to [rz]
l
set [rz] to [[rz]]
r
swap [rz] with [rn]
z
set [rz] to 0
+
increase [rz] by 1
-
decrease [rz] by 1
[
jump to next | or ] if [rz] = 0 or carry on
]
jump to prev [ if [rz] > 0 or carry on
|
jump to next ]