====== Subject Tags ======

Subject Tags are a part of Visual3D's [[visual3d:documentation:definitions:multisubject|Multisubject]] support and allow users to associate a generic label (a tag) with a subject in a C3D file. This tag is as flexible as [[visual3d:documentation:pipeline:file_commands:assign_tags_to_file|file tags]] and can included roles such as "Ball-carrier" and "Tackler", demographic categories such as "Young" and "Old", or other categorical distinction such as "Skilled" and "Novice". Subjects Tags should not be confused with [[visual3d:documentation:definitions:subject_prefixes|Subject Prefixes]], which are used to identify subjects within a C3D file.

==== Creating Tags ====

Subject tags can be created and modified through the user interface using the ** Model -> Add/Modify Subject Tags ** menu option.

{{:SubjectTags.png}}

This can also be accomplished through the [[visual3d:documentation:pipeline:pipeline_overview|Visual3D pipeline]] using the [[Visual3D:Documentation:Pipeline:Model_Commands:Set_Subject_Tag|Set_Subject_Tag]] command.

==== Using Tags ====

The active subject tag can be set through the user interface using the "Subject" drop down menu.

{{:SubjectTagDropDown.png}}

This can also be accomplished using the [[Visual3D:Documentation:Pipeline:File_Commands:Select_Active_File|Select_Active_File]] pipeline command.

==== Reserved Tag Names ====

There are two reserved tag names that cannot be used by the user:
  * **All_Subjects**: All prefixes/tags fall into this category (including No_Subject).
  * **No_Subject**: Any segments that were defined without using a prefix in the model template will be associated with No_Subject.

==== See Also ====

Go back to the [[visual3d:documentation:definitions:multisubject|Multisubject]] overview.