displayClass.MFD = {

    NRST: {

        'NEAREST VOR' : func {

            # just a POC

            print('here there will be a page for searching nearest VORs');

        },

    },

};

displayClass.setMFDPages = func {

    foreach (var g; me.device.data['page selection']) {

        var obj_s = size(g.objects);

        # build specific geometry per page, depending of number of sub-pages

        g.geometry = {x: 720, y: 758 - ((obj_s + 3) * 24), w: 300, l: obj_s + 1, sep: 1};

        # complete the hash with reccurrent elements type and callback

        var firstEntry = 1;

        foreach (var o; g.objects) {

            if (contains(me.MFD, g.name) and contains(me.MFD[g.name], o.text)) {

                o.type = firstEntry ? 'selected' : 'editable';

                o.type ~= '|end-of-line';

                o.callback = me.device.buttons.MFD_page_wrapper;

                firstEntry = ! firstEntry;

            }

            else

                o.type = 'normal|end-of-line';

        }

    }

    # build the available groups line, at the bottom

    forindex (var g; me.device.data['page selection']) {

        append(me.device.data['page selection'][g].objects, {type: 'separator'});

        for (var i = 0; i < g; i+=1)

            append(me.device.data['page selection'][g].objects,

                {text: me.device.data['page selection'][i].name, type: 'normal'});

        append(me.device.data['page selection'][g].objects,

            {text: me.device.data['page selection'][i].name, type: 'highlighted'});

        for (var i = g+1; i < size(me.device.data['page selection']); i+=1)

            append(me.device.data['page selection'][g].objects,

                {text: me.device.data['page selection'][i].name, type: 'normal'});

    }

    me.device.knobs.FmsOuter = me.device.knobs.MFD_select_page_group;

};