=} URL to use as link or id of a widget to add a tooltip (optional)
* @param {text=} use 'tooltip' in combination with a widget id as href in order to attach a tooltip to that widget. Any other text will interpret href as link to a popup (optional)
*
* @see misc/fundamentals#Array-Form
*
* @author Stefan Widmer
* @info inspired by Martin Gleiß and Raik Alber
*/
{% macro print(id, item, format, formula, threshold, color, href, rel) %}
{% set color = color|default('icon0') %}
{% if href is not empty and rel 