If you are clever then everybody can find out how a site is made. But I don't know about your customer. Normally you will not see it, but if you start looking at the code then you will be able to find out.

Hello Warren,

We have added a new function in the WebSite X5 Professional 10: you now have the possibility to hide the ''Metatag <generator>.
''. If you don’t want to publicise the program you used to create a site, just tick an option and the Metatag <generator> will be removed from the code of every single page. Your clients will not be able to see WebSite X5's name in the code anymore.
Hope this helps,

Samantha