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--- nav_macros.twig---
{% macro home() %}
    <a href="/">Home</a>
{% endmacro %}

{% macro previous(current_page_number) %}
    {% if current_page_number == 1 %}
        null
    {% else %}
        <a href="page#{current_page_number - 1}.html">Previous</a>
    {% endif %}
{% endmacro %}

{% macro next(globals, module_name, current_page_number) %}
    {% set module_def        = attribute(globals, module_name) %}
    {% set module_page_count = module_def.page_count %}
    {% if current_page_number >= module_page_count %}
        null
    {% else %}
        <a href="page#{current_page_number + 1}">Next</a>
    {% endif %}
{% endmacro %}


---template---
<html>
<head>
{% block html_header %}
{% endblock %}
</head>
<body>
<h1>Module page</h1>
{% block pagecontent %}
    {% import "nav_macros.twig" as nav %}
    <div id="navbar">
        {% block previous %}
			{{ nav.previous(page.page_number)}}
        {% endblock %}

        {% block home %}
			{{ nav.home() }}
        {% endblock %}

        {% block next %}
			{{ nav.next(_context.site, page.module_name, page.page_number) }}
        {% endblock %}
    </div>

    {% block healthcontent %}
    {% endblock %}
{% endblock %}
</body>
</html>