[Fig. 1 and Fig 2--sketch of signalling with flags as described below].
The signalman may work from left to right, or from right to left, as
shown in figs. 1 and 2, according to convenience and the direction of the
wind. To make a short flash, the flag is waved from a to b, and back to
the normal position a. To make a long flash, the flag is waved from a to
c, and back to the normal position a.
The numerals 1 to 5 are, therefore, denoted by one to five waves of the
flag from a to b, recovering to a.
The numeral 6 by a wave from a to c, recovering to a. The numeral 7 by a
wave from a to b, back to a, and then to c, recovering to the normal
position a. The numeral 8 is denoted by a wave from a to c, back to a,
and then to b, recovering to the normal position a. The numeral 9 is
denoted by two waves from a to b, and one from a to c. The numeral 0 by
one wave from a to c, recovering again to a, and then two waves from a to
b. The other signs are made in the same manner, so that a short motion
shall always represent a short flash, and a long motion a long flash.
On the completion of the motions required for each sign, the flag must
always be brought to the position a. When the word, or group of figures,
is completed, the flag may be lowered in front of the body.
In receiving a message, the flag should always be kept in the position a,
except when answering.
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