What does the "*" symbol next to a line on the MCD screen signify?

The symbol next to a line on the MCD (Multi-Function Control Display) screen, specifically the asterisk (*), indicates that the function associated with that line will be initiated when the corresponding line select key is pressed. This is an important aspect of the MCD interface, as it allows pilots and crew members to quickly and efficiently access various functions and data inputs needed for flight management and system controls.

When a pilot sees the asterisk on the display, it signals that the action is ready to be executed, highlighting the interactive nature of the MCD's design. Understanding this feature helps ensure that operations using the MCD are performed smoothly and correctly, enhancing situational awareness and operational efficiency during flight.