Plan.opens.step: def of ezx@1.11.0.0
Import: import ezx@1.11.0.0/src/tool/plan.bend as Plan
Lines 388-394 of ezx@1.11.0.0/src/tool/plan.bend: https://jend.leeeet.dev/read.txt?path=ezx@1.11.0.0/src/tool/plan.bend&start_line=388&end_line=394

import Base
import ezx@1.11.0.0/src/tool/world.bend as TW

# a question kept when it is still open
def opens.step(open: Bool, ask: TW.Ask, rest: List<&2, TW.Ask>) -> List<&2, TW.Ask>:
  match open:
    case True{}:
      ask <> rest
    case False{}:
      rest

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=ezx@1.11.0.0/src/tool/world.bend&name=Ask