Maybe this is a wish list item but…
Is there any way do display multiple files together? For example, open a file containing a room in a house for editing. Then open a file containing the house structure for read only but be be able to see the house structure for editing the room.
My problem is that I have some files with about 100 separate layers. This is difficult to work with. Moving something from one layer to another is particularly tough with giant drop down.
In fact I would like to overlay components from the separate files.
In my case, the large files are all 2-D drawings so I am not seeing any performance difficulties.
This appears to be describing what I am looking for:
However, (1) it does not explain the process and (2) further reading suggests this (attaching files) is a Windoze-only feature.