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<b>Body</b> may include the following variables which will be substituted in the email with a value
specific to each proposal:
<ul>
<li><code>{% templatetag openvariable %} proposal.title {% templatetag closevariable %}</code> e.g. {{ proposals.0.title }}
<li><code>{% templatetag openvariable %} proposal.kind {% templatetag closevariable %}</code> e.g. {{ proposals.0.kind }}
<li><code>{% templatetag openvariable %} proposal.speaker {% templatetag closevariable %}</code> e.g. {{ proposals.0.speaker }}
</ul>
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