@fdl version="1.0" schema="http://fdl.org.uk/fds/dat.fds"
data_types={
 # example - illustrating various data types
 example_object={
  list1=(string="xxx" boolean=true value=null)
  list2=(integer=8 decimal=0.5 identifier=xxx)
  list3=("lists" ("can" ("be" ("nested"))))
  @annotation:allow:(nested=objects)
  nested_object={
   title="Anonymous"
   chain=consecutive.identifiers.permitted
  }
 }
}