Say I've got three splits open with code in, and I suddenly want to make the one I'm in fullscreen, temporarily. How can I do that?
When focused on it, run:
To open a new tab with the same file. You can navigate tabs with
gt among other, if you want to go back to your split.
Once you are done with it, on the "fullscreen" one, run:
to close the tab (technically closes the focused window, which is the only one of the tab, and closing the last window of the tab closes the tab).