Defra pattern for asking for easting and northing values in the Gov.uk Prototype kit
npm install cathydutton/defra-easting-and-northing
Include the macro in the prototype kit page template
{% from "defra-easting-and-northing/macro.njk" import demoMacro %}
{{ demoMacro({ }) }}
This code is open source software licensed under the Apache 2.0 License.