WordPress at a glance
function is not described

PO::set_comment_before_headers() public WP 1.0

Text to include as a comment before the start of the PO contents

Doesn't need to include # in the beginning of lines, these are added automatically

{} It's a method of the class: PO{}

No Hooks.

Return

null. Null. Nothing.

Usage

$PO = new PO();
$PO->set_comment_before_headers( $text );
$text(string) (required)
Text to include as a comment.

Code of PO::set_comment_before_headers() WP 5.7

<?php
function set_comment_before_headers( $text ) {
	$this->comments_before_headers = $text;
}