But you can set the shortcut for those Keyboard Shortcuts in Sigil Preferences:
See:
- Compare Epub against Previous Checkpoint
- Create Checkpoint for Epub
- Edit Checkpoint Descriptions
- Manage Checkpoint Repositories
In fact you can set shortcuts for all of the registered commands in Sigil. Default ones are not set because there simply are not enough keys shortcuts free.
See the long list of registered commands that shortcuts can be assigned to in Sigil/src/MainUI/MainWindow.cpp starting here and going to line 6163
https://github.com/Sigil-Ebook/Sigil...ndow.cpp#L5990