casts << {:long=>'identity', :short=>'i', :type=>'float', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}
casts << {:long=>'e_val', :short=>'e', :type=>'float', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}
casts << {:long=>'identity', :short=>'i', :type=>'float', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}
casts << {:long=>'e_val', :short=>'e', :type=>'float', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}