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-rw-r--r--src/newgrf_callbacks.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/newgrf_callbacks.h b/src/newgrf_callbacks.h
index b21b29f8e..40e10694c 100644
--- a/src/newgrf_callbacks.h
+++ b/src/newgrf_callbacks.h
@@ -210,6 +210,11 @@ enum CallbackID {
/** Customize the output cargo types of a newly build industry. */
CBID_INDUSTRY_OUTPUT_CARGO_TYPES = 0x14C,
+
+ /* ATTENTION:
+ * When adding new callbacks and their result is 15bit, add them to newgrf_spritegroup.cpp:Is8BitCallback().
+ * It does not harm to add them there though they are not implemented. But it does harm if they get forgotton.
+ */
};
/**