How should I make sense of the output from fskmod?

I don't understand why fskmod produces the spectrum in the example https://www.mathworks.com/help/comm/ref/fskmod.html.

For a general fsk, I am expecting something like this. So, I don't know how to interpret the results in example on the documentation page.

Answer 1

[SaiDileep Kola]

the link provided is no more available and your file too, refer the recent documentation on fskmod here.