##fileformat=VCFv4.1
##INFO=<ID=SVLEN,Number=.,Type=Integer,Description="Difference in length between REF and ALT alleles">
##contig=<ID=1>
#CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO
1	10	.	C	<DEL>	.	.	SVLEN=-1000
1	10	.	C	<DEL>	.	.	SVLEN=-1000
1	10	.	C	<DEL>	.	.	SVLEN=-2000
1	10	.	C	<DEL>	.	.	SVLEN=-1000
1	10	.	C	<DEL>	.	.	SVLEN=-3000
1	10	.	C	<DEL>	.	.	SVLEN=-2000
1	10	.	C	<DEL>	.	.	SVLEN=-1000
1	10	.	C	<DEL>	.	.	SVLEN=-3000
1	10	.	C	<DEL>	.	.	SVLEN=-2000
1	20	.	CCC	CC	.	.	.
1	20	.	CC	C	.	.	.
