For example, you might bookmark a customer you often deal with, or use bookmarks as a to-do list when there are several invoices you need to follow up.
Wherever an item can be added to bookmarks, a star iconis available at the top of the page. Clickwhen the bookmark option is available to bookmark that item. Click it again to un-bookmark the item.
To view the list of bookmarked items, clickin the left-hand panel. Click any item in the list to open it. Click to un-bookmark an item; you can use this feature to "check off" bookmarked items as you resolve them.