Checks which button was pushed by the user during the most recent MsgBox command.
One of the following strings to represent which button the user pressed in the most recent MsgBox command:
Timeout (that is, the word "timeout" is present if the MsgBox timed out)
MsgBox, 4, , Would you like to continue?, 5 ; 5-second timeout. IfMsgBox, No Return ; User pressed the "No" button. IfMsgBox, Timeout Return ; i.e. Assume "No" if it timed out. ; Otherwise, continue: ...