How does the model comparison mark items in the modeling area?

The model comparison marks changed items in the modeling area in different colors to make the changes clearly visible.

Gray border:

Red border in the first comparison model:

Blue border in the second comparison model:

Information icons (Information icon) are shown for the differences in the comparison models. Positioning the mouse pointer over one of these icons for a little while displays information about the difference.

The marks are only active for as long as the model comparison tab is open, that is they are not saved.