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-rw-r--r--doc/lua_api.txt7
1 files changed, 5 insertions, 2 deletions
diff --git a/doc/lua_api.txt b/doc/lua_api.txt
index e4ffa7bbe..9bf0b551b 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -3217,8 +3217,11 @@ This is basically a reference to a C++ `ServerActiveObject`
* `11`: bubbles bar is not shown
* `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.
+ * `value` must be a string.
+ * If `value` is `nil`, remove attribute from player.
+* `get_attribute(attribute)`:
+ * Returns value (a string) for extra attribute.
+ * Returns `nil` if no attribute found.
* `set_inventory_formspec(formspec)`
* Redefine player's inventory form
* Should usually be called in `on_joinplayer`