Implementing Zoom FFT MATLAB

I want to implement a Zoom fft algorithm in MATLAB. In MATLAB's documentation, there's an example of implementing it but I fail to understand it. Here is a link to the documentation https://fr.mathworks.com/help/dsp/examples/zoom-fft.html?searchHighlight=zoom%2520fft&s_tid=doc_srchtitle Can anyone please help me implementing ?

[Star Strider]

Please post a link to the documentation.

I do not know what your are referring to.

[Safouane Chergui]

Thanks for the remark. I've added the link