_wp_posts_page_notice() │ WP 4.2.0

Outputs a notice when editing the page for posts (internal use only).

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Returns

null. Nothing (null).

Usage

_wp_posts_page_notice();

Changelog

Since 4.2.0 Introduced.

_wp_posts_page_notice() code WP 7.0

wp-admin/includes/template.php 
function _wp_posts_page_notice() {
	wp_admin_notice(
		__( 'You are currently editing the page that shows your latest posts.' ),
		array(
			'type'               => 'warning',
			'additional_classes' => array( 'inline' ),
		)
	);
}