Static field type is used just to print some non editable data into the form.

$this->add('address', 'static', [
    'tag' => 'div', // Tag to be used for holding static data,
    'attr' => ['class' => 'form-control-static'], // This is the default
    'value' => 'Static Text' // If nothing is passed, data is pulled from model if any

Generates html:

<div class="form-group">
    <label for="address">Address</label>
    <div class="form-control-static">Static Text</div>

<div class="form-group">
    <label for="password">Password Confirmation</label>
    <input type="password" name="password_confirmation">

Beside inherited, there are some additional options available:

  1. tag (String) (Default: div) - Tag to be used