I want to edit a single file, but split it horizontally so I can edit two parts of the document (similar to MS Word).
Under view>layout>rows, it shows a file horizontally. However- it only allows a new file (not the same file).
Is this possible?
As you said you need to split the view by using View -> Layout - > Rows: 2. Then being on the Row 1 you need to go to File -> New View into File. It will open second tab with the same file. Then you can drag that tab to the Row 2.