diff --git a/10.md b/10.md
index 94db4fa..5f056b6 100644
--- a/10.md
+++ b/10.md
@@ -47,7 +47,7 @@ Where:
  * `<marker>` is optional and if present is one of `"reply"`, `"root"`, or `"mention"`.
  * `<pubkey>` is optional, SHOULD be the pubkey of the author of the referenced event
 
-Those marked with `"reply"` denote the id of the reply event being responded to.  Those marked with `"root"` denote the root id of the reply thread being responded to. For top level replies (those replying directly to the root event), only the `"root"` marker should be used. Those marked with `"mention"` denote a quoted or reposted event id.
+Those marked with `"reply"` denote the id of the reply event being responded to.  Those marked with `"root"` denote the root id of the reply thread being responded to. For top level replies (those replying directly to the root event), only the `"root"` marker should be used. Those marked with `"mention"` denote a non-root/parent event id in the reply chain, *not* a quote.
 
 A direct reply to the root of a thread should have a single marked "e" tag of type "root".