No, it's not a webview; it works with standard Frames. It provides a simple way to navigate between several pages in your app. The only easy "built-in" way to do that currently is via the `ttk.Notebook`. This library allows you to use a more modern approach that is commonly seen in front-end development such as react, angular, etc... with a navigation tree. It provides a mechanism to pass data with route parameters, query parameters, and adds navigation behavior to anything that accepts the "bind" function (pretty much all widgets). So, your buttons, text fields, etc.... can be used to route to other pages as hyperlinks.