revert accidental removal of documentation for trusted option in sources.list

In b0d408547734100bf86781615f546487ecf390d9 I accidently removed the
documentation for Trusted and replaced it with Signed-By instead of
adding it.

Git-Dch: Ignore

diff --git a/doc/sources.list.5.xml b/doc/sources.list.5.xml
index 71447e84f1fdc02b7b5fe35469828dd67a81bf61..8a8dc04b7ecc443f39793e24d74e52cb6fbd563f 100644 (file)
--- a/doc/sources.list.5.xml
+++ b/doc/sources.list.5.xml
@@ -265,6 +265,20 @@ deb-src [ option1=value1 option2=value2 ] uri suite [component1] [component2] [.
        anomalies.
 
        <itemizedlist>
+         <listitem><para><option>Trusted</option> (<option>trusted</option>)
+               is a tri-state value which defaults to APT deciding if a source
+               is considered trusted or if warnings should be raised before e.g.
+               packages are installed from this source. This option can be used
+               to override this decision either with the value <literal>yes</literal>,
+               which lets APT consider this source always as a trusted source
+               even if it has no or fails authentication checks by disabling parts
+               of &apt-secure; and should therefore only be used in a local and trusted
+               context (if at all) as otherwise security is breached. The opposite
+               can be achieved with the value no, which causes the source to be handled
+               as untrusted even if the authentication checks passed successfully.
+               The default value can't be set explicitly.
+         </para></listitem>
+
          <listitem><para><option>Signed-By</option> (<option>signed-by</option>)
                is either an absolute path to a keyring file (has to be
                accessible and readable for the <literal>_apt</literal> user,