[Gnuplot-info] How to display lines x = 0 and y = 0 when plotting a function?

[dxs <sh...@gm...>]

Dear all,

After having spend a few hour trying to find info about this, I've resorted
to asking the community.:

Suppose I want to plot the function x**2 in a certain viewing rectangle. I
type:

plot [-3:3] [-10:10] x**2 - 3 

What should I add to also DISPLAY lines x = 0 and y = 0 with my graph of
x**2 - 3, so that I can see the intercepts?

Thanks a million,
Dmitry.
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