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-rw-r--r--doc/lua_api.txt4
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/lua_api.txt b/doc/lua_api.txt
index 95b514a92..49292d2b4 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -3331,7 +3331,9 @@ Definition tables
-- ^ Number of nodes the decoration can be at maximum.
-- ^ If absent, the parameter 'height' is used as a constant.
spawn_by = "default:water",
- -- ^ Node that the decoration only spawns next to, in a 1-node square radius.
+ -- ^ Node that the decoration only spawns next to.
+ -- ^ The neighbours checked are the 8 nodes horizontally surrounding the lowest node of the
+ -- ^ decoration, and the 8 nodes horizontally surrounding the ground node below the decoration.
num_spawn_by = 1,
-- ^ Number of spawn_by nodes that must be surrounding the decoration position to occur.
-- ^ If absent or -1, decorations occur next to any nodes.