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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 607a13fdd..d8e297f4c 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -3028,7 +3028,9 @@ This is basically a reference to a C++ `ServerActiveObject`
* `0`: player is drowning,
* `1`-`10`: remaining number of bubbles
* `11`: bubbles bar is not shown
-* `set_attribute(attribute, value)`: sets an extra attribute with value on player
+* `set_attribute(attribute, value)`:
+ * Sets an extra attribute with value on player.
+ * If value is nil, remove attribute from player.
* `get_attribute(attribute)`: returns value for extra attribute. Returns nil if no attribute found.
* `set_inventory_formspec(formspec)`
* Redefine player's inventory form