WordPress at a glance
action is not described

customize_render_section action-hook . WP 3.4.0

Fires before rendering a Customizer section.

Usage

add_action( 'customize_render_section', 'action_function_name_2237' );
function action_function_name_2237( $this ){
	// action...
}
$this(WP_Customize_Section)
WP_Customize_Section instance.

Where the hook is called

WP_Customize_Section::maybe_render()
wp-includes/class-wp-customize-section.php 288
do_action( 'customize_render_section', $this );

Where the hook is used (in WP core)

Does not used.