Re: pxref

[Richard M. Stallman]

      * First, the previous line of text, before a blank line, ended with a
        colon.  (You can see that here.)  A colon followed by a blank line
        should not force lower case when a blank line intervenes.

        To fix, move the colon from the conditional that always produces a
        lower case `see' and to the conditional that produces an upper
        case `See' and add a colon to the conditional involving a blank
        line.

That would make colon always act like the end of a sentence.
That isn't correct.

I installed a fix I think is correct.