module types {
	
	group subtypes {
		type integer sampleType1 (0,1,2,3);
		type charstring sampleType2 ("a", "b", "c")
	}
	group records {
		type record sampleType3 {
			integer field1,
			charstring field2
		}
		type record sampleType4 {
			integer field1,
			charstring field2,
			boolean field3
			
		}


	}
}