track name=hg18_extent description="hg18 chromosome extents"
chr1	0	247249719	chr1
chr1_random	0	1663265	chr1_random
chr10	0	135374737	chr10
chr10_random	0	113275	chr10_random
chr11	0	134452384	chr11
chr11_random	0	215294	chr11_random
chr12	0	132349534	chr12
chr13	0	114142980	chr13
chr13_random	0	186858	chr13_random
chr14	0	106368585	chr14
chr15	0	100338915	chr15
chr15_random	0	784346	chr15_random
chr16	0	88827254	chr16
chr16_random	0	105485	chr16_random
chr17	0	78774742	chr17
chr17_random	0	2617613	chr17_random
chr18	0	76117153	chr18
chr18_random	0	4262	chr18_random
chr19	0	63811651	chr19
chr19_random	0	301858	chr19_random
chr2	0	242951149	chr2
chr2_random	0	185571	chr2_random
chr20	0	62435964	chr20
chr21	0	46944323	chr21
chr21_random	0	1679693	chr21_random
chr22	0	49691432	chr22
chr22_random	0	257318	chr22_random
chr22_h2_hap1	0	63661	chr22_h2_hap1
chr3	0	199501827	chr3
chr3_random	0	749256	chr3_random
chr4	0	191273063	chr4
chr4_random	0	842648	chr4_random
chr5	0	180857866	chr5
chr5_random	0	143687	chr5_random
chr5_h2_hap1	0	1794870	chr5_h2_hap1
chr6	0	170899992	chr6
chr6_random	0	1875562	chr6_random
chr6_cox_hap1	0	4731698	chr6_cox_hap1
chr6_qbl_hap2	0	4565931	chr6_qbl_hap2
chr7	0	158821424	chr7
chr7_random	0	549659	chr7_random
chr8	0	146274826	chr8
chr8_random	0	943810	chr8_random
chr9	0	140273252	chr9
chr9_random	0	1146434	chr9_random
chrM	0	16571	chrM
chrX	0	154913754	chrX
chrX_random	0	1719168	chrX_random
chrY	0	57772954	chrY