I have a dual monitor and I wish I can pop out the \"source pane\"(where I edit my code), so that I can edit the code in one monitor and track everything else in another.
This feature was just added to RStudio this week. You can try it in our daily builds (0.99.636 or newer):
https://dailies.rstudio.com/
To pop out your file to a new window, either:
If you try it, let us know what you think on the support forum.