Replying to myself...
I think this also desevers a mention in changes.html. Here is something
that I came up with. OK? Or does anybody have suggestions for a better
wording?
Or maybe this is better:
diff --git a/htdocs/gcc-14/changes.html b/htdocs/gcc-14/changes.html
index 4b83037a..d232f631 100644
--- a/htdocs/gcc-14/changes.html
+++ b/htdocs/gcc-14/changes.html
@@ -282,8 +282,14 @@ a work-in-progress.</p>
<!-- <h3 id="d">D</h3> -->
-<!-- <h3 id="fortran">Fortran</h3> -->
-
+<h3 id="fortran">Fortran</h3>
+<ul>
+ <li> With the <code>-save-temps</code> option, preprocessed files
+ with the <code>.fii</code> extension will be generated for
+ free-form source files such as <code>.F90</code> and
+ <code>.fi</code> for fixed-form files such as <code>.F</code>.
+ </li>
+</ul>
<!-- <h3 id="go">Go</h3> -->
<!--
.................................................................. -->
