Searches that you do frequently, or if that have multiple options that you might not want to retype, can be saved and then re-run with one click. To save a search, put in the criteria options you want, and in the "Name Search" field at the top of the Search Results page, type a descriptive name for the search, and click the "Search" button.
The search criteria are saved with this name, and appears as an option on the "Search" menu at the top of the page. Then to re-run the search, just select the menu option. This shows only your own searches.
To modify the options in a previously saved search, retype the same name, and it will replace the search that was defined before.
To rename or delete a search, go to the "Manage Saved Searches" menu option on the "Search" menu.
A good example of how this might be used is doing a search for people without birthdates defined -- "which date" = "Birth" and "blank dates" = "only". Then returning to this search to find those to be updated is only one click away.
A few pre-defined searches appear in the search menu: