Possibly also the ability to have a marker type for 'external machine', so a user could click on the markers list to locate the deck to pre-defined points.
Context is to locate a tape-deck to a commonly used start point (eg 09:59:30:00) in preparation for layback, rather than manually typing in TC locate points every time. Or for shortform (a 3 minute news story every 5 minutes after 10:00:00:00) external machine markers could be a part of the Pyramix template for quick access.
If more elaboration is needed, just ask
