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