There was a forumer that "stubbornly" wanted to use pop up windows that looked pretty much like VX ACE's default Window_MapName class. This means that it would show up the same way the map name does.
Obviously, it will not be triggered after a map transfer for obvious reasons.
Just in case you did not know this, my script allows you to pass either a single line of text or an Array of lines as its first parameter.
Don't worry, my friends! The rest of the parameters are totally optional!
Convenient Features
You can set an additional button to close the alerts.
\gs[1] gets replaced by the corresponding game switch, i.e. ON or OFF.
\v[1] gets replaced by the corresponding game variable.
Set the Alert Window's Coordinates: $game_system.set_alert_xy(X, Y)