Ah, okay. Didn't realize the spec is now in perlpodspec. And the spec indeed mentions the case of multiple/ambiguous section:

This specification does not specify what behavior should be in the case of a given document having several things all seeming to produce the same section identifier (e.g., in HTML, several things all producing the same anchorname in ... elements). Where Pod processors can control this behavior, they should use the first such anchor. That is, L<Foo/Bar> refers to the first "Bar" section in Foo.
But for some processors/formats this cannot be easily controlled; as with the HTML example, the behavior of multiple ambiguous ... is most easily just left up to browsers to decide.

So I guess the simplest thing to do on the part of document writer is to make sure section names are unique.

In reply to Re^4: Linking to a POD section that is not uniquely named (try it to see) by perlancar
in thread Linking to a POD section that is not uniquely named by perlancar

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.