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# 08/01/2004 - tetraweb AT genoscope.cns.fr
# Description of chr.agp file
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Field1 : chromosome name
Field2 : Start position on the chromosome
Filed3 : End position on the chromosome
Field4 : Type of sequence (S=scaffold, N=gap)
Field5 : Name of sequence
	  - SCAFxxxx : scaffold xxxx
	  - CENT     : centromere (gap of 500Kb)
	  - GAP_IS   : gap between scaffolds in ultracontig (1kb)
	  - GAP_UC   : gap between two mapped ultracontigs (50Kb)
	  - GAP_UN   : gap between 2 random ultracontigs, or between 
		       ultracontigs and scaffold, not mapped (2kb)
Field6 : Start position on scaffold
Field7 : End position on scaffold
Field8 : scaffold's strand (on the chromosome)
Field9 : scaffold's length