NAME

       Bio::LiveSeq::Exon - Range abstract class for LiveSeq

SYNOPSIS

         # documentation needed

DESCRIPTION

       Class for EXON objects. They consist of a beginlabel, an endlabel (both referring to a
       LiveSeq DNA object) and a strand.  The strand could be 1 (forward strand, default), -1
       (reverse strand).

AUTHOR - Joseph A.L. Insana

       Email:  Insana@ebi.ac.uk, jinsana@gmx.net

APPENDIX

       The rest of the documentation details each of the object methods. Internal methods are
       usually preceded with a _

   new
         Title   : new
         Usage   : $exon1 = Bio::LiveSeq::Exon-> new(-seq => $objref,
                                                     -start => $startlabel,
                                                     -end => $endlabel, -strand => 1);

         Function: generates a new Bio::LiveSeq::Exon
         Returns : reference to a new object of class Exon
         Errorcode -1
         Args    : two labels and an integer

   get_Transcript
         Title   : get_Transcript
         Usage   : $transcript = $obj->get_Transcript()
         Function: retrieves the reference to the object of class Transcript (if any)
                   attached to a LiveSeq object
         Returns : object reference
         Args    : none
         Note    : only Exons that compose a Transcript (i.e. those created out of
                   a CDS Entry-Feature) will have an attached Transcript