Hiding pages in link completion

Good morning, I'm using silverbullet to track my projects and schedule work for the day. Every now and then, I manage to complete a project :tada::wink: and would like to hide it from future being suggested to me when I create a page link via [[.
I just noticed that the tag meta/library hides pages. Is it possible to define my own custom tag that would hide pages?

Everything tagged something that starts with meta/ is considered a meta page and therefore won't be auto completed, nor appear in the page picker (but will appear in the Meta Picker, and when using the [[^meta page link]] syntax). Therefore, a hack you could use is to tag your pages with e.g. #meta/completed.

However, there are other ways we could potentially take this, but then it's not super clear to me if you'd want to only exclude certain pages from auto complete, or also from the page picker. If both, how would you still find them etc.

Thanks, that is a really helpful hint. meta/completed works for me. I maintain an index page that doesn't use the meta tag and lists all pages with the completed tag. That's how I still can discover completed projects.