Footnotes option

<?php

$dictionary['Opportunity']['fields']['probability'] = array(
    'name' => 'probability',
    'vname' => 'LBL_PROBABILITY',
    'type' => 'int',
    'dbType' => 'double',
    'audited' => true,
    'comment' => 'The probability of closure',
    'validation' => array('type' => 'range', 'min' => 0, 'max' => 100),
    'merge_filter' => 'enabled',
    'footnotes' => [
        [
            'labelKey' => 'LBL_NEW_ADDED_LABEL',
            'displayModes' => ['edit', 'create'],
        ]
    ]
);