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				@@ -654,7 +654,7 @@ $Id$ 
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				 2.3. Nonterminals in router descriptors 
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				-   nickname ::= between 1 and 19 alphanumeric characters ([A-Za-z0-0]), 
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				+   nickname ::= between 1 and 19 alphanumeric characters ([A-Za-z0-9]), 
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				       case-insensitive. 
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				    hexdigest ::= a '$', followed by 40 hexadecimal characters 
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				       ([A-Fa-f0-9]). [Represents a server by the digest of its identity 
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