{{ htmlSnippet("html:start")|default("")|safe }}
{{ htmlSnippet("head:start")|default("")|safe }}
{% block title %}{% endblock %}
{% if options.isbn %}
{% endif %}
{% block head %}{% endblock %}
{{ htmlSnippet("head:end")|default("")|safe }}
{{ htmlSnippet("body:start")|default("")|safe }}
{% block style %}{% endblock %}
{% block content %}{% endblock %}
{% block javascript %}{% endblock %}
{{ htmlSnippet("body:end")|default("")|safe }}
{{ htmlSnippet("html:end")|default("")|safe }}