The Markup/No tes feature lets you highlight particular sections of your design (schematic and layout) and make a note of things. To add a Markup/Note to, follow the steps below:
1. In the design editor, navigate to and click on it
2. Select either the rectangle or arrow tool to markup a particular section of the design . A unique colour can also be selected for highlighting purposes
3. Immediately after the markup, navigate to on righthand toolbar and you'll have the option to annotate/note the markup. Here you can enter a short title for the issue.
4. Clicking on the note will give these options and you can leave comments to include more details on the issue: