The position of any object is in the coordinate space of the object's ancestor. Suppose you define an object as a child of a graphical region, as follows:

 

graphical region B size 400 300 at position 100 100

 

red key A at position 50 100 in B

 

The graphical region B is the parent (ancestor) of the key A. The at position specification for A is specified in the coordinate system of B, as shown below.

 

 

A textual region cannot be the ancestor of any object.