This post should display a featured image, if the theme supports it.
Non-square images can provide some unique styling issues.
This post tests a vertical featured image . . .
This is the post content. It should be displayed in place of the auto-generated excerpt in single-page views. Archive-index pages should display an auto-generated excerpt of this content. Depending on Theme-defined filters, the length of the auto-generated excerpt will vary from Theme-to-Theme. The default length for auto-generated excerpts is 55 words . . .
This post tests comments in the following ways.
Threaded comments up to 10 levels deep
Paginated comments (set Settings > Discussion > Break comments into pages to 5 top level comments per page)
Comment markup / formatting
Gravatars and default fallbacks . . .