Here's an example template:

{% extends "base.html" %}

{% block content %}

{% if form.errors %}<h1>Please correct the following errors</h1>{% else
%}<h1>{{ form_step_name }}</h1>{% endif %}

<form action="" method="post">
<table>
{{ form }}
</table>
<input type="hidden" name="form_prev_state" value="{{ form_prev_state }}" />
<input type="hidden" name="form_step_name" value="{{ form_step_name }}" />

{% if not first %}
  <p><input type="submit" name="submit_type" value="Prev" /></p>
{% endif %}

{% if not last %}
  <p><input type="submit" name="submit_type" value="Next" /></p>
{% endif %}

{% if last %}
  <p><input type="submit" name="submit_type" value="Finish" /></p>
{% endif %}
</form>

{% endblock %}