Hot Key	Operation
+	Increase model scale
-	Decrease model scale
Ctrl+C	Connect to data source
Ctrl+D	Disconnect
Ctrl+G	Generate database
Ctrl+N	New model
Ctrl+O	Load model
Ctrl+P	Print model
Ctrl+Q	Quit the application
Ctrl+R	Reverse engineering
Ctrl+S	Save model
F1	Show context help
Alt+F7	Product settings