Now with USER INTERFACE!
I updated
the widget to no longer require editing of the widget file to define one's build queues.
Suggested configuration is now:
1. Start skirmish
2. Plop factory
3. Optional: Pause game (so the first unit in the queue won't have finished by the time you're done entering the queue)
4. Order units in the fac as usual
5. With the fac selected, press Ctrl+Alt+Shift+S (Hotkey configurable in Settings -> Unit Behavior -> Store build queue). A chat message should appear.
6. Exit. Your queue will now be ordered whenever you plop or build this fac type.
To delete a stored queue, do the same, but with an empty queue.
I also recommend the "Stop Factory Production" command to quickly clear the queue when you build a factory in the later game, where the stored queue is usually unsuitable. Don't remember if there's a default hotkey for it, but I bound it to Ctrl+S.