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
52.3730454554572 4.89483636363636
Bonn
327913
50.7345545463786 7.09981818181818
Rome
2753000
41.8800000009378 12.52