Boshys BTE Utils is a mod that makes building inside of the Build the Earth project easier by allowing users to visualise their TPLL points with markers, along with other features such as image overlays, automatic TPLL by KML files, and more!
Image of how overlays can be used as blueprints in game
Example of how lines are visualised in game
Close up visual of how markers and lines visualise TPLL.