The 2021 release of AutoCAD had a fantastic new feature that eliminated one of the biggest frustrations I had with my favorite software. Right from their introduction back in R11 (1990), every design job I had utilized External References – or Xrefs... With Xref Compare, there are no more email threads to the architect, no more voicemails, instant messages, or trips to the other side of the building to figure out what changed.