overlay (roll option)
This article is a stub, you can help the RPTools Wiki project by contributing content to expand this article.
Overlays are a MapTool 1.7+ feature which places a transparent HTML5 overlay over the map view. Players can click through the overlay to affect the map as normal, but clickable effects on the overlay will work as intended.
Between HTML5, CSS, and JavaScript, this allows for graphical user interfaces akin to Diablo and WoW.