3
3
.
.
2
2
B
B
a
a
s
s
i
i
c
c
V
V
i
i
e
e
w
w
O
O
p
p
e
e
r
r
a
a
t
t
i
i
o
o
n
n
s
s
I
I
n
n
f
f
o
o
Following
chapters
explain ho
w to perform so
me basic o
perations w
ith the Vie
ws.
