<refsection><info><title>Description</title></info>
-<para>Add a path prefix to each HTML
-<tag class="element">img</tag> or FO
-<tag class="element">fo:external-graphic</tag> element's
-<tag class="attribute">src</tag> attribute.
-This path could be relative to the directory where the HTML/FO
+<para>Add a path prefix to the value of the <tag class="attribute">fileref</tag>
+attribute of <tag>graphic</tag> and <tag>imagedata</tag> elements. The resulting
+compound path is used in the output as the value of the <tag class="attribute">src</tag>
+attribute of <tag class="element">img</tag> (HTML) or <tag class="element">external-graphic</tag> (FO).
+</para>
+
+<para>
+The path given by <literal>img.src.path</literal> could be relative to the directory where the HTML/FO
files are created, or it could be an absolute URI.
The default value is empty.
Be sure to include a trailing slash if needed.
</para>
+
<para>This prefix is not applied to any filerefs that start
with "/" or contain "//:".
</para>