<meta name="instructor" content="{{page.instructor|join:'|'}}" />
<meta name="helper" content="{{page.helper|join:'|'}}" />
<meta name="contact" content="{{page.email}}" />
+ <meta name="carpentry" content="{{site.carpentry}}"
{% if page.redirect %}
<meta http-equiv="refresh" content="0; url={{page.redirect}}" />
{% endif %}