me and a friend thought that there is possibly a way to use the same system on other "are you sure yes/no " gumps.
First of all we tried it with mail .
Char A sended an item to char B with 10g C.O.D (per nachname)
Char B has no money with him
Char B opens mail window : do you want that item yes/no
Char A givs B 10g
B accepts trade
Char B accepts mailwindow -> nothing happens
B logs out
so the mail window stays open , but isn't active , outdated ?
Next idea from another friend ,
using this method to get additional bankbag slots.
But entering a trade = bank gump gets killed
perhaps someone has more ideas ^^