directives ->
	language-version <1.1>,
	namespace <recreation.hobbies>;


model building <modelBuilding> ->

	rocketry <1YlXCOjc>,
	aircraft <JZeJHVqO>,
	military machinery <aZPvmze6>,
	cars <nTrzaTaW>,
	trains <1TaVzIFf>,
	ships <xGkMoNL4>,
	buildings <ecvobwPf>;