GNUPLOT: Plot for specific lines

GNUPLOT is very easy tool to plot the data in nicer way!

How to plot data from file 'data.dat' for total row lets say 2000?

--> Traditional way
p "data.dat" u 1:2 w l
or
plot "data.dat" using 1:2 with line

But, How to plot data for row from 1000 to 2000?
-->
p [1000:2000][] "data.dat" u 1:2 w l

So far this is easy. Right?

Now how to plot data for row from 1 to 1000 and 1001 to 2000?
Hmm... Quit tricky.

Lets do the following: [use some bash scripting ;-)]
-->
p "<(sed -n '1,1000p' data.dat)" u 1:2 w l, \
"<(sed -n '1001,2000p' data.dat)" u 1:2 w l
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