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.
These attributes show the values of the Info 1 and Info 2 boxes in the Project properties in .
With the content type REVISION, these attributes show the values of the Info 1 and Info 2 boxes in the Revision handling dialog.