If you want to see nothing at all, you can use:
PrintHandler => sub {}
Many of the methods are very long-running, so most users want
feedback about their status (and that the machine has not hung).
A PrintHandler callback function is the best I have thought of so far.
I suppose a GUI front-end could display the status message in
a window.
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Want more info? How to link
or How to display code and escape characters
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