sample article multiple refs advice misleading

[kcrisman]

<li><p>A range of sections, hand-named to be plural: Sections<nbsp /><xref first="section-sage-cells" last="section-cross-referencing" /></p></li>

As with multiple references, first will control autonaming and other features.

I think that probably in the example, it was a switch for global that was used, and probably it's text, not first, that would control autonaming. At any rate, I had to put text="global" to get the output in the sample article.

[rbeezer]

Thanks, KDC. That whole section needs a fresh look. More on #907