I just got a draw.io file (from https://app.diagrams.net/ or the app, draw.io-13.6.2-windows-installer.exe which can be downloaded from the same page), which I try to edit in the app, and I've noticed this in a text box:
What is that
+ in the box on the left? I cannot delete it as a character; if I click it, it toggles to
- (so apparently it is meant to expand something - but it is pointless here, there is just one word in the box).
So what is this
+ for - and how do I get rid of it?