If this property is activated at a main function, the assigned, unplaced auxiliary functions are managed together with the main function. This means that when the main function is copied and pasted, the unplaced auxiliary functions are also copied and pasted and automatically renamed - analog to the behavior at function templates. If the main function is deleted, the assigned unplaced auxiliary functions are also deleted.

This property calculates the value of the relevant main function for auxiliary functions.

Reference

Placement3DPropertyList Class
Placement3DPropertyList Members