form_checkbox([$data = ''[, $value = ''[, $checked = FALSE[, $extra = '']]]])

form_input([$data = ''[, $value = ''[, $extra = '']]])

form_dropdown([$name = ''[, $options = array()[, $selected = array()[, $extra = '']]]])

set_radio($field[, $value = ''[, $default = FALSE]])

form_textarea([$data = ''[, $value = ''[, $extra = '']]])