Firstly, save the sitemap somewhere convenient. Just the /sitemap, not the sitemap.xml. Right click > Save as...
Load the saved sitemap.html. Later calls of this function will overwrite the exisiting map.
Wrap the selection in an anchor tag. Candidates are read from links in the sitemap. The next annotation (the part in brackets) will be removed automatically.
Change the current link href and title by selecting a new candidate from the list.