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Textarea

Regular textarea.

textarea option type — Theme Settings example 
$options = [
	'demo_textarea' => [
		'label' => __( 'Textarea', 'unysonplus' ),  // or false to hide the label column
		'type' => 'textarea',
		'value' => 'Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.',
		'desc' => __( 'Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.',
			'unysonplus' ),
		'help' => [
			'icon' => 'video',
			'html' => '<iframe width="420" height="236" src="https://player.vimeo.com/video/101070863" frameborder="0" allowfullscreen></iframe>'
		],
		// — Optional attributes you can add —
		// 'attr' => [ 'class' => 'my-class', 'data-foo' => 'bar' ],  // extra HTML attributes
		// 'dynamic_content' => false,  // hide the Dynamic Content (database) picker
	],
];

Reading the value​

textarea returns a string — output it directly.

In a shortcode​

The shortcode framework passes the option values into view.php as $atts:

echo esc_html( $atts['demo_textarea'] );

In a page template — a per-page option​

Options defined on a post/page (a metabox) are read with fw_get_db_post_option():

$value = fw_get_db_post_option( get_the_ID(), 'demo_textarea' );
echo esc_html( $value );

When the field is one of several inside a box/group, read the whole group once and pick fields by key — the common CPT pattern (e.g. a review or book box):

$book = fw_get_db_post_option( get_the_ID(), 'book' );
echo esc_html( $book['demo_textarea'] );

In Theme Settings — a global option​

Global options are read with fw_get_db_settings_option():

$value = fw_get_db_settings_option( 'demo_textarea' );
echo esc_html( $value );

Saved value​

fw_print( fw_get_db_settings_option( 'demo_textarea' ) ) outputs — the shape of this option type's stored value:

First line of the description.
Second line with more detail.