drawing a line (not points) between data of different blocks using every

[Anglès d'Auriac]

Hello,
I need to draw a continous line betwwen all second points (row 7 and 3) of the 40 first
blocks of the dataBlock B. I use:
plot $B ind 0 usi 7:3 every ::2:0:2:40 wi po
it works fine, but
plot $B ind 0 usi 7:3 every ::2:0:2:40 wi li
does not (nothing is drawn)
note that
plot $B ind 0 usi 7:3 every ::2:0:2:40 wi linesp
show only the point.
Thanks !

[Anglès d'Auriac]

I found a solution that I post since it could be useful: use with table.

set table $B2
plot $B ind 0 usi 7:3 every ::2:0:2:40 wi table
unset table
plot $B2 with line

note that the word table cannot be abbreviated