Adds and Aggregates Xref to the current part

What

Merges and aggregates Xrefs to the current part.

Why

Make entities from certain Xrefs tied to a part.

How

Select the part of the tree to which you want the Xrefs to be aggregated and select the command; when the command is launched, the user is given the option to decide whether to explode the block with the entities present in the Xref or leave them block-like.