This is the holy grail for estimators. You can link a markup (e.g., a "Concrete Wall" measurement) to a cell in Excel. When you change the PDF markup, the Excel cell updates in real-time. Portable versions that maintain this DDE (Dynamic Data Exchange) link are highly prized.
If you live in the world of heavy civil construction, large-scale MEP coordination, or forensic estimating, you know the difference between Bluebeam Revu Standard and . bluebeam revu extreme portable exclusive
The eXtreme edition includes every feature found in the Standard and CAD versions, plus several high-level automation tools. Revu eXtreme The Complete PDF Solution This is the holy grail for estimators