# single comment line
# object schema definition:  object_name(key[:value], ...) 
> track(name:"refseq gene")

# specify coordinates
> coordinate(group:utgb, type:chromosome, species:human, revision:hg18)
> (name:chr1)

# object_name(attribute,.., object_name(attribute, ...), ...)
>> gene(name, strand, start, end, cds(start,end), exon(start, end)*) 
NM_001005277	+	357521	358460	[357521, 358460]	[[357521, 358460]]
NM_001005224	+	357521	358460	[357521, 358460]	[[357521, 358460]]
NM_001005221	+	357521	358460	[357521, 358460]	[[357521, 358460]]
NM_001005277	-	610958	611897	[610958, 611897]	[[610958, 611897]]
NM_001005224	-	610958	611897	[610958, 611897]	[[610958, 611897]]
NM_001005221	-	610958	611897	[610958, 611897]	[[610958, 611897]]
NM_152486	+	850983	869824	[851184, 869396]	[[850983, 851043],[851164, 851256],[855397, 855579],[856281, 856332],[861014, 861139],[864282, 864372],[864517, 864703],[866386, 866549],[867378, 867494],[867652, 867731],[867801, 868301],[868495, 868620],[868940, 869051],[869150, 869824]]	
- description: NL_152486 has several exons

> (name:chr2)
>> gene(name, strand, start, end, cds(start,end), exon(start, end)*) 
NM_001005277	+	357521	358460	[357521, 358460]	[[357521, 358460]]