WordPress at a glance
action is not described

export_wp action-hook . WP 2.3.0

Fires at the beginning of an export, before any headers are sent.

Usage

add_action( 'export_wp', 'action_function_name_1227' );
function action_function_name_1227( $args ){
	// action...
}
$args(array)
An array of export arguments.

Where the hook is called

export_wp()
wp-admin/includes/export.php 71
do_action( 'export_wp', $args );

Where the hook is used (in WP core)

Does not used.