+=over 4
+
+=item B<-a> | B<--alternate-config-dir> I<dirname>
+
+Uses I<dirname> as Claws Mail configuration directory.
+
+=item B<-b> | B<--verbose>
+
+Tells more on the standard output.
+
+=item B<-c> | B<--clawsrc> I<filename>
+
+Uses I<filename> as Claws Mail resource configuration file. This sets
+the full file name overriding any previous setting.