Make URL reusable even without explicitly specifying the number of results
Go to https://compass.torproject.org/ and then click submit. You get a list of the top ten relays, and your URL changes to "https://compass.torproject.org/#?exit_filter=all_relays&links&sort=cw&sort_reverse&country=". Great.
Then open a new tab and paste the above long URL into it. No relays listed!
If you type in '10' rather than leaving it to be the default, then you get a URL of "https://compass.torproject.org/#?exit_filter=all_relays&links&sort=cw&sort_reverse&country=&top=10", which does work when you paste it into a new tab.