I've been thinking about this, and it's a very good idea. So I now have a version of section toggle which does this. You create a standard url with a hash component which is aimed at the header. For instance
When you click on the link, it will go to the header and open.
The above formatting is standard for Dokuwiki, but even if you copy and paste the header with caps and spaces, Dokuwiki will normalize it in accordance with its rules. And if dokuwiki doesn't do it, sectiontoggle will.
Here is the url you will need to test this out:
Use the Extension Manager's Manual Install tab and paste the url into the install text box. Once we're happy with it, I'll integrate it into the master copy.