[ "Bib-1 Use attributes" => \&calc_ap, $xc, "bib-1" ],
[ "Dan-1 Use attributes" => \&calc_ap, $xc, "dan-1" ],
[ "Operators" => \&calc_boolean, $xc ],
[ "Bib-1 Use attributes" => \&calc_ap, $xc, "bib-1" ],
[ "Dan-1 Use attributes" => \&calc_ap, $xc, "dan-1" ],
[ "Operators" => \&calc_boolean, $xc ],