+ tooltip_ = _("Argument not known in this Layout. Will be suppressed in the output.");
+ }
+
+ if (former_pass_thru != pass_thru_) {
+ // PassThru status changed. We might need to update
+ // the language of the contents
+ Language const * l = insetlayout
+ ? it.inset().buffer().language()
+ : it.buffer()->language();
+ fixParagraphLanguage(l);