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GFF (General Feature Format)

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General feature format (GFF) lines are based on the GFF standard file format. GFF lines have nine required fields that must be tab-separated. If the fields are separated by spaces instead of tabs, the track will not display correctly. For more information on GFF format, refer to http://www.sanger.ac.uk/resources/software/gff. Here is a brief description of the GFF fields: 1) seqname - The name of the sequence. Must be a chromosome or scaffold. 2) source - The program that generated this feature. 3) feature - The name of this type of feature. Some examples of standard feature types are "CDS", "start_codon", "stop_codon", and "exon". 4) start - The starting position of the feature in the sequence. The first base is numbered 1. 5) end - The ending position of the feature (inclusive). 6) score - A score between 0 and 1000. If the track line useScore attribute is set to 1 for this annotation data set, the score value will determine the level of gray in which this feature is displayed (higher numbers = darker gray). If there is no score value, enter ".". 7) strand - Valid entries include '+', '-', or '.' (for don't know/don't care). 8) frame - If the feature is a coding exon, frame should be a number between 0-2 that represents the reading frame of the first base. If the feature is not a coding exon, the value should be '.'. 9) group - All lines with the same group are linked together into a single item. Example :"
"","track name=regulatory description="TeleGene(tm) Regulatory Regions""
"","chr22 TeleGene enhancer 1000000 1001000 500 + . touch1"
"","chr22 TeleGene promoter 1010000 1010100 900 + . touch1"
"","chr22 TeleGene promoter 1020000 1020000 800 - . touch2"