@view_config(renderer='templates/form.pt', name='textareacsv')
    @demonstrate('Text Area CSV Widget')
    def textareacsv(self):
        class Row(colander.TupleSchema):
            first = colander.SchemaNode(colander.Integer())
            second = colander.SchemaNode(colander.String())
            third = colander.SchemaNode(colander.Decimal())
        class Rows(colander.SequenceSchema):
            row = Row()
        class Schema(colander.Schema):
            csv = Rows()
        schema = Schema()
        form = deform.Form(schema, buttons=('submit',))
        form['csv'].widget = deform.widget.TextAreaCSVWidget(rows=10, cols=60)
        appstruct = {'csv':[ (1, 'hello', 4.5), (2, 'goodbye', 5.5) ]}
        return self.render_form(form, appstruct=appstruct)