Quips are small text messages that can be configured to appear next to search results. A Bugzilla installation can have its own specific quips. Whenever a quip needs to be displayed, a random selection is made from the pool of already existing quips.
Quip submission is controlled by the quip_list_entry_control parameter. It has several possible values: open, moderated, or closed. In order to enable quips approval you need to set this parameter to "moderated". In this way, users are free to submit quips for addition but an administrator must explicitly approve them before they are actually used.
In order to see the user interface for the quips, it is enough to click on a quip when it is displayed together with the search results. Or it can be seen directly in the browser by visiting the quips.cgi URL (prefixed with the usual web location of the Bugzilla installation). Once the quip interface is displayed, it is enough to click the "view and edit the whole quip list" in order to see the administration page. A page with all the quips available in the database will be displayed.
Next to each quip there is a checkbox, under the "Approved" column. Quips who have this checkbox checked are already approved and will appear next to the search results. The ones that have it unchecked are still preserved in the database but they will not appear on search results pages. User submitted quips have initially the checkbox unchecked.
Also, there is a delete link next to each quip, which can be used in order to permanently delete a quip.
Display of quips is controlled by the display_quips user preference. Possible values are "on" and "off".