Features / Compare and revise
Overlay Pages
Two to four sheets over each other, each in its own colour.
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.
Detect RevisionsFill the revision schedule from each title block.
Place PDFLay a consultant's drawing over your sheet, then move, scale and tint it.
Trace PaperSee-through sheets to sketch on, each its own PDF layer.