diff -r c8585746a177 -r 26325201d4d7 src/newgrf_text.h
--- a/src/newgrf_text.h	Tue Jun 12 12:27:40 2007 +0000
+++ b/src/newgrf_text.h	Tue Jun 12 13:22:14 2007 +0000
@@ -13,4 +13,6 @@
 void SetCurrentGrfLangID(const char *iso_name);
 char *TranslateTTDPatchCodes(const char *str);
 
+bool CheckGrfLangID(byte lang_id, byte grf_version);
+
 #endif /* NEWGRF_TEXT_H */