Each object in the system is identified by a collection of tagnames.
All tagnames are optional. The more you use them the more powerfull the model and the more structure you need.
The Symbol Tag
This is the tagname as it appears for each symbol on a diagram. t
The Instance Tag
Instance tagname provide a means of identifying each instance of the objects in a model
An S88 oriented structure might be
Area.Unit.Equipment Module.Control Module.
See also RealTags
The Object Tag
See Object Tags
Symbol Tags do not have to be unique even on one diagram, but if they generate data then a unique name is.
Object Tag have to be unique, Globally, so one object tag can only exist in one Class.
See also Tagging and Numbering