diff --git a/event.go b/event.go
index 3ef7262..9c6778a 100644
--- a/event.go
+++ b/event.go
@@ -100,7 +100,7 @@ example:
 		},
 		&cli.BoolFlag{
 			Name:        "outbox",
-			Usage:       "use outbox relays from specified public keys",
+			Usage:       "publish to the \"write\" relays of the author and to the \"read\" relays of anyone mentioned  in \"p\" tags",
 			DefaultText: "false, will only use manually-specified relays",
 			Category:    CATEGORY_EXTRAS,
 		},
diff --git a/req.go b/req.go
index 8c7c4e1..db79cec 100644
--- a/req.go
+++ b/req.go
@@ -68,7 +68,7 @@ example:
 			},
 			&cli.BoolFlag{
 				Name:        "outbox",
-				Usage:       "use outbox relays from specified public keys",
+				Usage:       "read from \"write\" relays of \"authors\" and/or from the \"read\" relays of any \"#p\" or \"#P\" tags",
 				DefaultText: "false, will only use manually-specified relays",
 			},
 			&cli.UintFlag{