Textarea with a maximum of 30 characters
'text_11' => [
'exclude' => 1,
'label' => 'text_11 max=30',
'config' => [
'type' => 'text',
'cols' => 30,
'rows' => 4,
'max' => 30,
],
],
// Example from extension "styleguide", table "tx_styleguide_elements_basic"