A checkmark symbol may appear beside certain options in the shortcut menu, such as:
• Questionable Data
• Alarm Disable (or Disable Alarm)
The checkmark indicates that the menu option has been activated.

The presence of a question mark beside certain shortcut menu options indicates that the menu item has been activated.
Selecting the same option a second time deactivates it and the checkmark is removed. Only those shortcut menu options that have two states (either off or on) feature checkmarks. Shortcut menu options requiring a value or opening a dialog do not feature checkmarks.
The sections that follow discuss common shortcut menu options and their use.