Teams that receive engineering drawings — owner's representatives, technical managers, building and asset operators, consultants — are expected to review and comment on them without owning CAD software or knowing how to use it. In practice the review happens across email threads, marked-up printouts and ad-hoc spreadsheets, and by the third revision nobody can say which comments were answered and which were quietly dropped. Xenmark is a browser-based drawing review tool built for that side of the table. Reviewers mark up PDF drawings directly in the browser — no CAD, no per-seat licences for occasional reviewers, no training. Every revision produces the same two documents: a comment plan PDF showing each comment at its marked position on the drawing, and a comment list Excel recording every comment, its status and its response. Closed projects export as a complete archive bundle. The point is not to replace anyone's design tools. It is to make the review cycle traceable from first submission to final close-out, so the record of what was asked and what was answered outlives the project. Xenmark AS is a Norwegian company with a free tier and paid plans at €14.99 and €59.99 per month.