puts a command on the POST-Event-stack.
The command gets executed afterwards, i.E. outside of ITEMCHANGED.
how it works:
An internal TIMER checks every 0.4 seconds the POST-Event-stack and processes the included functions.
if you have commands on the event-stack you can not make a rowfocuschange.
if you make a post-event with prior2, then you can make a rowfocuschange
// send command on Eventstack
// you can not make a rowfocuschange (= open window)
post=myfunction()
// with prior2: you can make a rowfocuschange
post=prior2:myfunction