used to override a system-supplied hwdb file with a local file if needed;
a symlink in <filename>/etc</filename> with the same name as a rules file in
<filename>/lib</filename>, pointing to <filename>/dev/null</filename>,
- disables the rules file entirely. Hwdb files must have the extension
+ disables the rules file entirely. hwdb files must have the extension
<filename>.hwdb</filename>; other extensions are ignored.</para>
<para>The hwdb file contains data records consisting of matches and