Quote:
Originally Posted by theducks
I know how to CAUSE that (right click the column title: Split...)
I don't know how to undo it.
 (very dim :bulb  ) You might try the same on the column where the split start ends and see if the prompt is different, if not, try the next logical column |
You right-click at the panel spot between the split and there is an option to unsplit it.
I have never used this feature and don't even know what it's for. I just end up opening Calibre and getting half a library with an empty viewer pane to the left.
What is split library for anyway?