The Paruba project is an alternative for sketching simple construction plants.
Now without FontLoader, TextGeometry and DragControls.
the link:
https://jrlazz.eu5.org/anim/paruba.php
You won’t have the possibility to save your project in Showcase site.
Removing slashes in a comment, then You will be able to save objects in Your Server.
Thanks for the creative and knowledgeable staff of Three.js.
Jose Roberto Lazzareschi