How do tags work?

You can tag any document with the following syntax:

title: How to create a new page?
    - documentation
    - page

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Iste, eveniet
consectetur aspernatur dolor voluptatem laboriosam impedit officiis
consequatur dignissimos nesciunt temporibus aliquam earum porro sapiente
blanditiis dolorem non. Minus, quae!

When a document is tagged, it's going to be added to the global variable carew.tags..

Moreover, few pages will be generated:

You can create a link to the first page with this syntax {{ path('tags') }} and to a specific tag: {{ path('tags/') }}.

For the moment, tags pages are not customizable. Open an issue if you want to be able to customize them.