Does a pending ⎕DL delay abort when a user closes a MsgBox window in Dyalog APL?
Goal: Determine whether a pending ⎕DL delay in Dyalog APL’s GUI edition is cancelled when the user closes a MsgBox window, or whether the delay always runs to completion before the alert is displayed. Constraints: The interaction between ⎕DL and asynchronous GUI events is not fully documented; behavior may differ across Windows, macOS, and Linux ports, and r