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The short version. The 25 / 25 pager at the edge of the viewer walks you through the drawing set — sheet 1 to sheet 25. It is not the revision history of the sheet you’re looking at.

Getting around

To see the earlier versions of the sheet you’re on, that’s revisions, not the pager. See Revisions.

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Mark it up

Pen, highlighter, box and measure.

Revisions

Which sheet was the crew building from?