diff -r 64fd3da2e6dd -r 20b08e59730d QTfrontend/ui/page/pageoptions.cpp
--- a/QTfrontend/ui/page/pageoptions.cpp	Thu Nov 22 20:59:23 2018 +0300
+++ b/QTfrontend/ui/page/pageoptions.cpp	Thu Nov 22 20:41:42 2018 +0100
@@ -664,6 +664,7 @@
                 if(entryName.isEmpty())
                 {
                     // Show error and the locale identifier
+                    //: In the case of an error, this is shown in the language selection for a language with unknown name. %1 = language code
                     entryName = tr("MISSING LANGUAGE NAME [%1]").arg(lname);
                 }
                 CBLanguage->addItem(entryName, lname);