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diff --git a/doc/concepts/expressions.md b/doc/concepts/expressions.md
index c66de8bc..dcd567af 100644
--- a/doc/concepts/expressions.md
+++ b/doc/concepts/expressions.md
@@ -253,6 +253,9 @@ those) argument(s) to obtain the final result.
a map with the members of the list as keys, and all values being
`true`.
+- `"reverse"` The argument has to be a list. The result is a new list
+ with the entries in reverse order.
+
- `"++"` The argument has to be a list of lists. The result is
the concatenation of those lists.