Document implications of EFF_OWNER.

diff --git a/include/file.h b/include/file.h
index d1ffcf55637273d86e5584a5f9f60bc13c4408c7..bf2c2bc77fd733713f1e77b4cf5ba59f09af20d9 100644 (file)
--- a/include/file.h
+++ b/include/file.h
@@ -60,7 +60,9 @@ struct empfile {
  *
  * EFF_XY and EFF_GROUP assert that coordinates / group of such a
  * file's record can be safely obtained by dereferencing its memory
- * address cast to struct genitem *
+ * address cast to struct genitem *.
+ *
+ * EFF_OWNER asserts that player->owner is set by ef_read().
  */
 #define EFF_XY         bit(0)  /* has location */
 #define EFF_MEM                bit(1)  /* stored entirely in-memory */