Most commonly used commands in a modeling tool have shortcut keys, allowing you to access the commands quicker. However, you can assign custom shortcut keys to modeling tool commands and change or remove already-existing shortcut keys. To assign a new shortcut key to a command After performing the above procedure, the shortcut key is assigned to the selected command and you can start using it. Note that the assigned short key is only valid for the command of the selected category. For example, if you assign a shortcut key to the Comment command in the Activity Diagram - Common toolbar category, as shown in the figure below, it will not work for the Comment command in diagrams of a different type. Usage information You can remove both default and custom shortcut keys. To remove a shortcut key Restoring shortcut keys To restore all shortcut keys to their default values, open the Environment Options dialog, select Keyboard, and click Reset to Defaults.Assigning a shortcut key to the Comment command in the Activity Diagram toolbar.
Removing shortcut keys