##fileformat=VCFv4.2
##reference=file://some/path/human_g1k_v37.fasta
##contig=<ID=1,length=2147483647>
##FORMAT=<ID=GT,Number=1,Type=String,Description="Genotype">
##INFO=<ID=AF,Number=A,Type=Float,Description="Allele Frequency">
#CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO	FORMAT	s1	s2	s3
1	101	.	T	A	.	.	AF=0.3	GT	0/1	0/1	0/1
1	102	.	T	A	.	.	AF=0.2	GT	0/1	0/1	0/1
1	103	.	T	A	.	.	AF=0.1	GT	0/1	0/0	0/0
1	104	.	T	A	.	.	AF=0.3	GT	0/0	0/0	0/0
1	105	.	T	A	.	.	AF=0.2	GT	0/0	0/0	0/0
1	106	.	T	A	.	.	AF=0.1	GT	0/1	1/1	1/1
1	107	.	T	A	.	.	AF=0.3	GT	0/1	0/0	0/1
1	108	.	T	A	.	.	AF=0.2	GT	0/1	1/1	0/1
