(svn r17165) -Update: tweak obs/obg format description slightly

2009-08-13 14:24:13 +00:00
parent cab25f7c24
commit 084b4fed56
2 changed files with 3 additions and 1 deletions
--- a/docs/obg_format.txt
+++ b/docs/obg_format.txt
@@ -49,6 +49,8 @@ tropical     = TRGH.GRF
 ; GRF file with extra toyland sprites
 toyland      = TRGT.GRF
 ; NewGRF file using Actions 5, 7, 9 and A to replace sprites
+; Must use a GRF ID starting with FF so it cannot be selected from
+; the in-game NewGRF list and (thus) be loaded twice.
 extra        = OPENTTDD.GRF

 ; The md5s section lists the MD5 checksum for the files that replace them.