--- /dev/null
+##fileformat=VCFv4.2
+##INFO=<ID=AC,Number=A,Type=Integer,Description="Allele count in genotypes, for each ALT allele, in the same order as listed">
+##contig=<ID=contig123,length=15>
+##contig=<ID=contig456,length=20>
+##contig=<ID=contig789,length=25>
+##INFO=<ID=AF,Number=A,Type=Float,Description="Allele Frequency, for each ALT allele, in the same order as listed">
+##reference=test/jalview/io/vcf/contigs.fasta
+#CHROM POS ID REF ALT QUAL FILTER INFO
+contig123 8 . C A 81.96 . AC=1;AF=0.1
+contig123 12 . G T 1666.64 . AC=1;AF=0.2
+contig456 15 . T C 41.94 . AC=1;AF=0.3
+contig789 2 . G T 224.23 . AC=1,2;AF=0
+contig789 21 . G A 433.35 . AC=3;AF=0.6