diff --git a/docs/operation-log.md b/docs/operation-log.md
index f9cc020f8..56d63ef61 100644
--- a/docs/operation-log.md
+++ b/docs/operation-log.md
@@ -17,6 +17,9 @@ The operation log allows you to undo an operation (`jj [op] undo`), which doesn'
 need to be the most recent one. It also lets you restore the entire repo to the
 way it looked at an earlier point (`jj op restore`).
 
+When referring to operations, you can use `@` to represent the current operation
+as well as the `-` operator (e.g. `@-`) to get the parent of an operation.
+
 
 ## Concurrent operations