'table', '#tableselect' => TRUE, '#empty' => $this->t('Empty text.'), ]; $form['table']['row'] = [ 'data' => [ '#title' => 'kitten', '#markup' => '

some text

', ], ]; $form['table']['another_row'] = [ 'data' => [ '#title' => $this->t('my favourite fruit is @fruit', ['@fruit' => 'bananas']), '#markup' => '

some more text

', ], ]; return $form; } /** * {@inheritdoc} */ public function submitForm(array &$form, FormStateInterface $form_state) { } }