3D Tag add-in makes you to be able to tag in a 3d View. It is developed for Revit Architecture, Revit MEP and Revit Structure. 3D Tag Provides all parameters of all categories in Revit's Multi- Category Tag Feature. All project components in the selected category can be tagged at once or user can select the object to be tagged one by one. Parameter names and parameter values can be tagged together or seperately, prefixes and suffixes can ve defined and "Space" character can be used between tag contents. Tags can be organized as a single row or every value can be specified in a new row. After tagging is finished, changes made to the project are updated in the tag values automatically .