code: def input_check(self, name, label, multi_line=False):
          
          lines = list()
          lines.append('{%% if %s %%}' % name)
          lines.append(self.tab + '{% set checked = "checked" %}')
          lines.append('{% else %}')
          lines.append(self.tab  + '{% set checked = "" %}')
          lines.append('{% endif %}')
          if multi_line:
              line_break = "<br>"
          else:
              line_break = ""
          lines.append('<input type="checkbox" name="%s" value="%s" {{checked}}> %s %s' % (name, name, label, line_break))        
          return "\n".join(lines)
docs: {% if multiple_choice_1 %}
              {% set checked = "checked" %}
          {% else %}
              {% set checked = "" %}
          {% endif %}
          <input type="checkbox" name="multiple_choice_1" value="multiple_choice_1" {{checked}}> multiple_choice_1