Available at: Message and Upload area subboard prompts
The Z (search item text) command is useful for finding items which discuss a particular topic of interest to you. By default, the Z command will search all items in the current subboard. To search ALL subboards, use the ZG (search global) command.
The search is not case-sensitive.
If you wish to search only the titles and descriptions of items, a faster (and easier) method is available by using the SCAN 'text' command, where you replace text with what you are looking for.