# Header and footer

The `content` key in `header` or `footer` can be used to add text to running header or footer content. Content can include static text, or reference variables using curly braces.

The following variable fields are currently supported:

- `title`: Map title
- `chapter`: Map chapter title
- `folio`: current page number
- `folio-with-total`: current page number with total number of pages
- `page-number`: current page number
- `page-count`: total number of pages
- `year`: current year

    header:
      content: '{title} — {chapter}'
      border-after: solid 1pt black

To define separate headers or footers for recto (right) and verso (left) pages, use the `odd` and `even` keys.

    header:
      border-after: solid 1pt black
      odd:
        content: '{title}'
        text-align: end
      even:
        content: '{chapter}'
        text-align: start