Asks for a popup to open. Takes id (The popup's name - the same one given to igiBeginPopup or igiBeginPopupModal).
id
String
If igiMenuItem("About") Then igiOpenPopup("About")
; ... later, in the same window or anywhere ...
If igiBeginPopupModal("About") Then
igiText("My Game v1.0")
If igiButton("Close") Then igiCloseCurrentPopup()
igiEndPopup()
EndIf