used to override a system-supplied link file with a local file if needed;
a symlink in <filename>/etc</filename> with the same name as a link file in
<filename>/lib</filename>, pointing to <filename>/dev/null</filename>,
- disables the link file entirely.
+ disables the link file entirely.</para>
<para>The link file contains a <literal>[Match]</literal> section, which
determines if a given link file may be applied to a given device; and a