I recently found a great write-up about SEO and anchored links . In particular, I found the following to be very helpful:
For longer or more complex pages, search engines frequently create direct links to the anchored locations. These are positioned very similarly to sitelinks in function.
Now, here's what I'm trying to figure out... Is it possible for search engines to create direct links to content in an accordion* so that when the link in the results is clicked, it opens the page with the accordion open to the specific reference? Likewise, is it possible for search engines to create direct links to content in a modal window* so that when the link in the results is clicked, it presents the page with the modal window open with the specific reference?
*Assuming it has been created in a way that is SEO-friendly.