Re: describe-text-properties highlighting and mouseover face is broken

[Richard M. Stallman]

    The original post was also about links, in fact, not buttons. Text that,
    when clicked, takes you to different text (a different page), is a link. A
    button performs some other action, besides text navigation. So, they should
    be signalled as links by underlining them, in addition to giving them a
    mouse-face property. A convention - e.g. blue - on link color is also
    helpful. Coloring visited links a slightly different color - e.g. violet -
    is also helpful.

I agree with this, but I am willing to listen to counterarguments
before making it a firm decision.