Document controls in software

[kaesesahnetorte]

I propose to add some text in the software (below the GUI control panel? perhaps a "help" window?) that says:

Hover your mouse over the face of bounding box and scroll to adjust its size in that dimension!
Press [CTRL] + click hold and drag a bounding box to rotate it!

[ch-sa]

Hi @kaesesahnetorte,

there is already the status bar in the bottom which shows you the current mode and gives instructions.

Maybe this could be extended depending on situations ("mouse over side", "CTRL hold down") and then show specific hints.

Otherwise, a help section in the menu bar with a key map would surely improve usability.

This should be fairly easy, so feel free to open a PR. Otherwise, I would consider it later ...

Best,

Christoph