I should have been more clear, it would be great if the Confluence Metrics graphs UI itself linked to the definition so it was more easily discoverable.
I.e. by putting a span with an ID on the definition of "Grace Period" in the README, and then linking to that fragment from the web UI, by hyperlinking the first instances of "Grace Period" (with quotes) appearing in the div class="text-content" elements in https://github.com/GoogleChromeLabs/confluence/blob/301782981ff6eeee30f4d272dcce6635ed09c943/static/view/confluence.html
I started a pull request at https://github.com/GoogleChromeLabs/confluence/pull/303 but figured you may have a more preferred method / markup for this.
Thanks for your consideration!