Tags are helpful for filtering the models in the model manager to show only the models for which a specific tag has been defined (see also
Filtering the models). To add a tag, you simply type its name and press Enter or the Tab key. The tag is then shown in a colored rectangle. To remove a tag, click on the
that is shown in the rectangle. The dialog prevents you from entering duplicate tags for a model; if you enter such a tag name, the duplicate tag is not added and the original tag blinks one time.