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<?php

/**
 * Custom Map Marker on Listing Meta Box
 */

add_filter('wpsight_map_listing_icon', 'wps48_map_listing_icon', 50);

function wps48_map_listing_icon($output) {

	// Insert your URL here.
	$output = 'http://my-url.com/wp-content/.../marker.png';
	
	return $output;
}