table mafFrames "codon frame assignment for MAF components" ( string chrom; "Reference sequence chromosome or scaffold" uint chromStart; "Start range in chromosome" uint chromEnd; "End range in chromosome" string src; "Name of sequence source in MAF" ubyte frame; "frame (0,1,2) for first base(+) or last bast(-)" char[1] strand; "+ or -" string name; "Name of gene used to define frame" int prevFramePos; "target position of the previous base (in transcription direction) that continues this frame, or -1 if none, or frame not contiguous" int nextFramePos; "target position of the next base (in transcription direction) that continues this frame, or -1 if none, or frame not contiguous" ubyte isExonStart; "does this start the CDS portion of an exon?" ubyte isExonEnd; "does this end the CDS portion of an exon?" )