It matches “project” items, those that end with a colon, such as:
Right, I get that. But all of the searches are for things like not @done which apply to tasks and not projects.
The full search documentation is at:
Generally / can be thought of as a filesystem path divider. Look in the search documentation for the “Item Paths” section, and then for “Steps” each of which is separated with a /.
Right. My issue is with \ , not /. Which is not mentioned at all in the search syntax reference but I finally happened to dig up here that backslashes are used to escape parenthesis in some way that doesn’t seem to be documented outside that one forum post.