Door tags are annotations that are generally used to enumerate instances of doors within a project by displaying the value of the door’s Mark property.
This value is equal to 1 for the first door you place, and it increases by 1 for each subsequent door, regardless of type.
You can specify that the tags are attached automatically as you place the doors or you can attach them later, either individually or all at once.
A door tag does not display if any part of the tagged door is outside the annotation crop region.