Added in 3.9
Trigger when a user presses a key in a picture window which produces a character.
<level> - The User Access Level for the event to trigger.
<*#?=!@> - The Matchtarget to listen to.
<key,...,keyN> - The $keyval to listen to.
<commands> - The commands to be performed when the event listener's criteria is met.
on *:CHAR:*:*:echo -sg Produced character $keychar in $active