I noticed that the manual has an extra "either", which makes a
sentence ungrammatical. This patch removes it.
@cindex remote protocol, binary data
@anchor{Binary Data}
-Binary data in most packets is encoded either as two hexadecimal
+Binary data in most packets is encoded as two hexadecimal
digits per byte of binary data. This allowed the traditional remote
protocol to work over connections which were only seven-bit clean.
Some packets designed more recently assume an eight-bit clean