[Ward]

Before posting my request, I checked File > Save As and Print > PDF > Save as PDF for "save as a single page."

The place I neglected to check was Help > OmniWeb Help > Saving Web Content, which describes the magic Option key. I'll confess that in the many years I've been using OmniWeb, I don't think I've ever felt the need to check Help -- everything just works.

So I'll modify my feature request on behalf of other Help-less (Help-free? Help-challenged?) users:

Please unhide File > Save as PDF