Drawing revisions: compare, go back and cloud the changes

In the video0:30

How to do it

Press Revisions at the top (the clock next to undo and redo), then “Mark a revision”. It gets the next letter and today’s date, and “What changed” is filled in from your changes. Give it a title, such as “Sent to the municipality”, and press “Mark revision”.
Keep drawing. To see what has changed since, press Compare on the revision: what moved, is new, was removed or changed is marked →, +, × or ~, how it was shows in grey, and the changes are listed in words, floor by floor.
What you move with the select tool snaps back to where it was in the revision, labelled “Rev. A”. Hold Alt to move it freely.
To put something back, select it and press “Back to Rev. A” in the bar at the bottom, or press ↶ next to a change in the list – also for something you deleted.
In Drawings, the title block’s Rev. field shows the latest letter, a revision table lists the revisions, and revision clouds go round what changed on the plans, sections and elevations.

Good to know

Undo forgets when the app closes, and takes back everything done since. A revision keeps the whole project, in the project file too, so one wall can go back exactly where it was.
Putting back respects what depends on what: walls joined to a wall you put back follow it, and a window whose wall is gone can’t come back. The app says what was put back and what wasn’t.
“Restore the whole project”, in the revision’s ⋯ menu, first keeps the project as it is now as a revision of its own (“Before restoring Rev. A”), so nothing is lost. “New project from this revision” leaves this one as it is.
The assistant can do it too: “save a revision: sent to the municipality”, “what has changed since the last revision?”, “move the wall back to where it was in revision A”.

Questions and answers

What do the drawings show?

The title block’s Rev. field fills itself with the latest letter; a letter you type there yourself still wins. Next to it, a revision table lists each revision with its letter, date and what changed, newest first. Revision clouds go round what changed, each with its letter in a triangle, as building authorities often ask when drawings are sent again. The table can be switched off for each sheet, and the clouds under “Show on the drawing”.

Which changes do the clouds mark?

The changes since the latest revision, with the letter the next one will get, so you see what will be clouded before you mark it. Once you have marked it and drawn nothing more, the clouds show what changed in that revision. The first revision has no clouds.

Where are the revisions kept?

In the project, with the rest of your drawing: in your browser, and in the project file when you save it, together with any underlay image only a revision still uses.