=head1 NAME
XML::DOM::AttDef - A single XML attribute definition in an ATTLIST in XML::DOM
=head1 DESCRIPTION
XML::DOM::AttDef extends L<XML::DOM::Node>, but is not part of the DOM Level 1
specification.
Each object of this class represents one attribute definition in an AttlistDecl.
=head2 METHODS
=over 4
=item getName
Returns the attribute name.
=item getDefault
Returns the default value, or undef.
=item isFixed
Whether the attribute value is fixed (see #FIXED keyword.)
=item isRequired
Whether the attribute value is required (see #REQUIRED keyword.)
=item isImplied
Whether the attribute value is implied (see #IMPLIED keyword.)
=back