I've got a fairly simple website created for my customer.
See it here:

It views okay on mobile devices because it is simple and fairly compact.
But he wants the phone number (on the Home page, and on the Contact page)
to be a 'hotlink dialer".

So anyone viewing on their phone or tablet, can click the number and automatically place a call
(in the same way you click an email link, and your mail program opens)

Is this possible within NoF10...and how?

I did find another site that explained some coding for this idea
but it all looks like Martian language to me.