foo {
  filter: progid:Microsoft.foo.bar.Baz(flip=foobar, bang=#00ff00cc);
  something: blah(hux=mumble);
  blah: progid:something.something(flip=foobar, bang=#abc);
  blah: progid:bar.hux();
  blah: string;
  opacity: 0.005;
  filter: alpha(opacity=0.5);
  bilter: alpha(opacity=0.5);
  kilter: string;
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#FFFF0000', endColorstr='#FF008000', GradientType=1); }