Tags are read-only and are used to convey internal information required for transitions or calculations.
A Vessel Tag is a reference to an expression evaluated in the CM controller. The expression may reference 1 of the 16 custom values which in-turn are set with custom logic written in the CM controller.
Name: 16 Character name used to reference the tag from other expressions in the unit or EMs.
Ordinal: Position within the Tags array of the Vessel status structure. This position is used by custom action procedures in the parent unit to reference the correct tag because names are not given here.