What is defined as the time since the START button was last pressed?

The term that refers to the duration since the START button was last pressed is best represented by the concept of Playback Time. Playback Time typically encompasses the entire span of activity from the initiation of an action or process until the current moment, emphasizing how long a specific operation has been engaged since it was activated.

Cycle Time refers to the total time required to complete one cycle of operation, which may include periods of inactivity or delays, while Job Time can represent the time taken to complete a specific job or task but does not necessarily relate to when the start button was last activated. Moving Time often focuses on the duration of actual movement within a process or system, rather than the initiation time. Therefore, Playback Time is distinct in highlighting the elapsed period since the process was started, making it the appropriate choice for the question posed.