How to change the page layout (extend and include)
[edit|delete]Yes. Views can extend and include other views in a tree like structure. The root of the tree is what we call a layout view. It is just an HTML file that you can edit as any other view using the administrative interface.
Example of view:
{{extend 'layout.html}}
<h1>Title</h1>
{{include 'footer.html'}}
A layout file must be something like
<html><head>....</head>
<body>
{{include}}
</body>