-$skip_SM_header = 'false' if ( !$skip_SM_header );
-$default_use_javascript_addr_book = 'false' if (! $default_use_javascript_addr_book);
+# since 1.5.1
+$use_icons = 'false' if ( !$use_icons );
+$use_iframe = 'false' if ( !$use_iframe );
+$lossy_encoding = 'false' if ( !$lossy_encoding );
+$allow_remote_configtest = 'false' if ( !$allow_remote_configtest );
+$addrbook_global_table = 'global_abook' if ( !$addrbook_global_table );
+$addrbook_global_writeable = 'false' if ( !$addrbook_global_writeable );
+$addrbook_global_listing = 'false' if ( !$addrbook_global_listing );
+$abook_global_file = '' if ( !$abook_global_file);
+$abook_global_file_writeable = 'false' if ( !$abook_global_file_writeable);
+$abook_global_file_listing = 'true' if ( !$abook_global_file_listing );