using Kip;

var pc = Capabiliites.Load(inputStream);
var options = for op in pc.Get(Psf.PageMediaSize).Options()
var displayNames = for op in options
                   select op.Property(Psk.DisplayName).Value.AsString();

using Kip;

var pt = Ticket.Load(inputStream);
pt = pt.Set(Psk.PageMediaSize,
    new Option(Psk.ISOA4,
        new ScoredProperty(Psk.MediaSizeWidth, 210000),
        new ScoredProperty(Psk.MediaSizeHeight, 297000)));
pt.Save(outputStream);