Insert/Remove Bookmark
The Insert/Remove Bookmark 
command is available in Text View only. It inserts a bookmark at the current cursor position, or removes the bookmark if the cursor is in a line that has been bookmarked previously.
Bookmarked lines are displayed in one of two ways: If the bookmarks margin has been enabled, then a solid cyan-colored ellipse appears to the left of the text in the bookmark margin. If the bookmarks margin has not been enabled, then the complete line containing the cursor is highlighted in cyan.
| Tip: | You can assign a keyboard shortcut for this command in the Keyboard tab of the Customize dialog box. |