jouak_selectCenterFrame 3.0.0 for Maya (maya script)

I dont understand what is this script doing.

when we go to the graph we always need to fit it all to the frame right?

yea when my graph is crowded i'm pressing the f and its making adjustments. Other than that script is not doing this function in my place.

i'm using maya 2016 and it wont work.Thats my assumption.

i drag and drop the file to the script editor and run it but still no difference.

you need to write some good explanations man. but thx so much for the idea.