v		input view
row		row position
args...		changes, as column/value pairs

Set takes an input view and returns one with the values of row modified. More values in the same row can be changed by specifying more arguments.

set v [view {A B C} def {a b c aa bb cc}]

view $v set 0 A x

	A	B	C
0	x	b	c
1	aa	bb	cc

view $v set 0 A p B q C r

	A	B	C
0	p	q	r
1	aa	bb	cc

view $v set -1 A xx

	A	B	C
0	a	b	c
1	xx	bb	cc

view $v set 0 1 yy

	A	B	C
0	a	yy	c
1	aa	bb	cc

view $v set 0 -1 zz

	A	B	C
0	a	b	zz
1	aa	bb	cc