-<chapter id="cha-checklist-element">
+<chapter id="chapter-checklist-element">
<title>
Things to check when writing an element
</title>
This function should also be called from _init.
</para>
</chapter>
-<chapter id="cha-checklist-filter">
+<chapter id="chapter-checklist-filter">
<title>
Things to check when writing a filter
</title>
<para>
</para>
</chapter>
-<chapter id="cha-checklist-srcsink">
+<chapter id="chapter-checklist-srcsink">
<title>
Things to check when writing a source or sink
</title>