OR
[[organization a]], [[organization b]], [[project c]]
this is a bit harder, but I think it could have some interesting uses
The default syntax for this feels like it should be to use commas
This is OR page is then treated like a page of its own
notably a link to any of the pages in the OR page shows up as a reference in the OR page
this is different from AND because only references that mention all of the pages in the AND show up in references