As far as I could tell (looking at generated output and at the source code), the :image "label" (as noted in the documentation and source) is not used. From the documentation, I had expected it to result in an anchor being placed in the document, so that it could be referenced (via link) from elsewhere within the document.
To work around this, I tried to manually create an anchor just before...
2007-10-29 21:11:13 UTC in HelpSetMaker