('ID_TAG_MASTER_OF_SEAT', Literal('1')),
('ID_INFRARED_CAMERA', Or((Literal('0'), Literal('1')))),
('ID_CAMERA_DIRECTION', Or(('front', 'rear'))),
+ ('SOUND_FORM_FACTOR', Or(('internal', 'webcam', 'speaker', 'headphone', 'headset', 'handset', 'microphone'))),
)
fixed_props = [Literal(name)('NAME') - Suppress('=') - val('VALUE')
for name, val in props]