yes        n = n means don't do end exons
no        d = d means debug
-3 +6     donor thefromrange thetorange
-25 +2    acceptor thefromrange thetorange
ei        ei means exon and intron features are also used.
a alternative 'a' means alternative exons are allowed
PNGus     kill: putative, not_experimental, gene prediction, Unpublished
n

exonp: parameters for exon version 1.72 or higher
