This example tests GML generation with Jinja2 templating, including the use of Jinja2 globals., such as for this description. Globals provide more or less constant/semi static information like point of contacts, global names, id-prefixes etc.
Test for GML generation via Jinja2 templating
4.88
41.88
12.52
53.98
Amsterdam
779808
4.89483636363636 52.3730454545455
Bonn
327913
7.09981818181818 50.7345545454545
Rome
2753000
12.52 41.88