Follow-up Comment #15, bug #62923 (project groff):
[comment #12 comment #12:]
> there is a potentially important distinction here, not between
> "radicalex" and "sqrtex", but in the horizontal motions that
> bracket them. "sr" is a "text" special character, meaning it's
> normally drawn from a text font.[1] "sqrt" is a "special" special
> character, meaning that it is drawn from a font that is expected
> to lack text glyphs (i.e., to lack glyphs that vary in the four
> traditional styles of roman, italic, bold, and bold-italic).
Bug #62973 now seeks to clarify this terminology.
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