TITLE1, TITLE2, TITLE3
This is a template attribute. Template attributes can be used in filtering, or to retrieve data from the model to use in drawings and reports. For example, when you create a report, Tekla Structures replaces the attributes added in the report template with the corresponding object property values.
In reports, this template attribute shows the user-defined titles entered in the Reports dialog. In drawing templates, this field shows the drawing titles entered in the drawing properties.