I created my third extension today, and I think due to its small size, might be useful for other people trying to get started with extension writing. It adds two buttons at the bottom of any NPC/Monster entry: Weak and Elite. Pressing one of the button, the extension creates a new monster entry applying the Elite/Weak template from Bestiary 1 (page 6). It was particularly interesting to learn more about string.gsub and string.match.

Feel free to download and take a look:

https://www.fantasygrounds.com/forum...ator-Extension

I would love any feedback from other developers as well!