No, the algo goes something like this:

* Look for "Summary" section. If found, narrow search there. Otherwise, start from top of doc.
* Look for `.seoSummary`. If found, use that for summary and we're done.
* Look for a good first paragraph, avoiding some common noise cases. If found, use that and we're done.

So, if "Summary" is missing, we search from the top of the doc. If `.seoSummary` is missing, we look for the first good paragraph. Overall, this is trying to leverage existing doc structure, offers the ability to be specific with `.seoSummary`, but otherwise doesn't impose any extra work.