WordPress at a glance
function is not described

kses_init() WP 2.0.0

Sets up most of the Kses filters for input form content.

If you remove the kses_init() function from 'init' hook and 'set_current_user' (priority is default), then none of the Kses filter hooks will be added.

First removes all of the Kses filters in case the current user does not need to have Kses filter the content. If the user does not have unfiltered_html capability, then Kses filters are added.

No Hooks.

Return

Nothing (null).

Usage

kses_init();

Code of kses init: wp-includes/kses.php VER 5.0.3

<?php
function kses_init() {
	kses_remove_filters();

	if ( ! current_user_can( 'unfiltered_html' ) ) {
		kses_init_filters();
	}
}