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.

Shows a string containing the position numbers of connected parts (e.g. P102 -> P17 P18 P23) for bolts. If the list type is ASSEMBLY_BOLT, the first position number is a member of the current assembly. Only use as an inquiry command for single bolts. For objects other than bolts the field is blank.