diff --git a/10.md b/10.md
index 5fff879..1d6f8ee 100644
--- a/10.md
+++ b/10.md
@@ -46,7 +46,7 @@ Where:
  * `<relay-url>` is the URL of a recommended relay associated with the reference.  It is NOT optional.
  * `<marker>` is optional and if present is one of `"reply"`, `"root"`, or `"mention"`
 
-**The order of marked "e" tags is not relevant.**  Those marked with `"reply"` denote the `<reply-id>`.  Those marked with `"root"` denote the root id of the reply thread. Those marked `"mention"` denote id of events that are tagged and are not the `"reply"` nor `"root"`.
+**The order of marked "e" tags is not relevant.**  Those marked with `"reply"` denote the `<reply-id>`.  Those marked with `"root"` denote the root id of the reply thread. Those marked with `"mention"` denote a quoted or reposted event id.
 
 A direct reply to the root of a thread should have a single marked "e" tag of type "root".