Features / Compare and revise
Place PDF
Lay a consultant's drawing over your sheet, then move, scale and tint it.
More in Compare and revise
Compare what's openCompare an issue with any PDF you already have open.
Changes SinceOutline everything changed after a date or a revision.
Overlay PagesTwo to four sheets over each other, each in its own colour.
Detect RevisionsFill the revision schedule from each title block.
Trace PaperSee-through sheets to sketch on, each its own PDF layer.