def blank.note
import bend-toon-codec@0.1.0.0/src/frame.bend as Frameimport Base
223# A blank line: remember the shallowest array it falls inside.
224def blank.note(+st: St) -> St:
225 match st:
226 case St{stk, root, bmin}:
227 St{stk, root, U32.min(bmin, arr.min(stk))}