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-rw-r--r--doc/spec/control-spec.txt3
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/spec/control-spec.txt b/doc/spec/control-spec.txt
index 86bdf8405..576c5dcd5 100644
--- a/doc/spec/control-spec.txt
+++ b/doc/spec/control-spec.txt
@@ -96,7 +96,8 @@ $Id$
Fingerprint = "$" 40*HEXDIG
; A "=" indicates that the given nickname is canonical; a "~" indicates
- ; that the given nickname is not canonical.
+ ; that the given nickname is not canonical. If no nickname is given at
+ ; all, Tor does not even have a guess for what this router calls itself.
LongName = Fingerprint [ ( "=" / "~" ) Nickname ]
; How a controller tells Tor about a particular OR. There are four