diff --git a/Help/command/list.rst b/Help/command/list.rst
index bd8277d1d4..621eeb4ce4 100644
--- a/Help/command/list.rst
+++ b/Help/command/list.rst
@@ -152,7 +152,12 @@ For more information on regular expressions look under
 
   list(INSERT <list> <element_index> <element> [<element> ...])
 
-Inserts elements to the list to the specified index.
+Inserts elements to the list to the specified index. It is an
+error to specify an out-of-range index. Valid indexes are 0 to `N`
+where `N` is the length of the list, inclusive. An empty list
+has length 0. If no variable named ``<list>`` exists in the
+current scope its value is treated as empty and the elements are
+inserted in that empty list.
 
 .. _POP_BACK: