www.wysiwygwebbuilder.com

Welcome!
How do I create a master page?
Thanks in advance for your reply.

See the following:
How to use Master Pages
https://www.wysiwygwebbuilder.com/master_page.html
How to use Embedded Pages
https://www.wysiwygwebbuilder.com/embedded_page.html
How to use Master Frames
https://www.wysiwygwebbuilder.com/master_frame.html

Thank you.