When working on a project, I would like to open a file from a previous project in a side-by-side window for reference, so I can view and adapt parts of the previous file into a file in the current project. I don't want the previous file to be part of the current project. Is this possible? If so, how?
If I understand what you want…
I would avoid mixing files between p^rojects. That may have really bad side effects.
What I do:
- open the other project
- close all panels except the file itself
- resize its window to reduce width and put it next to the main project.
- that does mimic pretty well having the 2 files in adjacents panels.