horizontal.accordion

```javascript window.Math.randomRange(min, max); window.Number.prototype.toRad(); window.Math.calculateDistance(lat1, lon1, lat2, lon2); ```

multi.language.input

```javascript window.Math.randomRange(min, max); window.Number.prototype.toRad(); window.Math.calculateDistance(lat1, lon1, lat2, lon2); ```

html.extension

This is a custom element that extends existing window object. Providing convenient functions to window.Math, window.NodeList and so on.