##Example 2 from Custom Annotation Tracks User's Guide
browser position chr22:20100000-20140000
track name=spacer description="Blue ticks every 10000 bases" color=0,0,255,
chr22   20100000 20100001
chr22   20110000 20110001
chr22   20120000 20120001
track name=even description="Red ticks every 100 bases, skip 100" color=255,0,0
chr22   20100000 20100100	first
chr22   20100200 20100300	second
chr22   20100400 20100500	third