While on the subject of parsers, Does anyone have a (pref. Martel-based) parser for FASTA formatted files (from the alignment FASTA programs, not standard FASTA formatting). TIA, Jay -- ______________________________________________________ Jay Hesselberth University of Texas 2500 Speedway MBB 3.424 / A4800 Austin, TX 78712 phone: 512-471-6445 email: jhessel@ellingtonlab.org