6.4: Preferences / Redo- Undo-Files
After every alteration of the flight-scene, the actual scene is stored in the
UNDO_REDO directory on a stack.
Here you have the possibility to set the number of undo-files (depth of stack).
Click on Preferences and afterwards on Redo- Undo-Files Settings.
An input field is displayed, in which you can enter the number.
Pre-set are 50.
Numbers smaller than 5 are not accepted, an error message pops up!