En-3
1
a4
a5
a8
a7
a6
Fig.3
Fig.2
a2
a1a15
a1
a9
Fig.4
a3
a9
a3
a16
a13a12
a11
a14
a10
a17
a18
a20
a19
Fig. 5
Fig. 1
Fig. 6
c7
c8
c9
c10
c2
c4
c5
c6
c3
c1
b1
b2
b4
b3
b5
b6
b13
b8
b9
b10
b11
b12
b7
b16
b15
b14
Fig. 7
To facilitate explanation, the accompanying illustra-
tion has been drawn to show all possible indicators;
in actual operation, however, the display will only
show those indicators appropriate to the current op-
eration.