If you do any COD Scripting in CADmep, ESTmep or CAMduct, I've recently added a LOT of undocumented functions and properties over the last couple months. Here's a rundown of them...

https://www.darrenjyoung.com/2021/01/17/fabrication-scripting-updates/

https://www.darrenjyoung.com/2021/01/21/autodesk-fabrication-scripting-did-you-know/

https://www.darrenjyoung.com/2021/02/04/more-fabrication-scripting-updates/