Returning to ldraw, mlcad parts tree help requested

[Patrick Campion]

Welcome to the forum!

As MLCAD is not actively developed anymore, I would recommend you to have a look at LDCad which is part of the All-In-One-Installer,try it!

Now to your question:

Have a look at Willy Tschager's Website, there is a extensive description of the features, among then the Organization of the Parts-Tree

Specifically you could go do this as follows:

Menu > Settings > Parts Tree > Tree Configuration

You can remove the patterned bricks when changing the "Bricks" Category to  "<Brick & !Pattern"
You can now add a new Category for patterned Bricks by adding "Bricks Patterned" with the search string "<Brick & Pattern>"

Thank you Gerald, that was exactly the nudge in the right direction I needed.
I will have a look at LDCad, thanks also for this suggestion.