Sections, especially headings, can be made link-targets by adding the id="#xyz" element.
Description
Sections, especially headings, can be made link-targets by adding the id="#xyz" element, yielding for example html headings like the following example.
Problems occur if the same link target is defined several times (also shown below).
<h2 id="seealso">First Heading</h2>
<h2 id="seealso">Second Heading</h2>
<a href="#seealso">Duplicate definition - where shall I go now?</a>