Name	Value	Description
cdrEnvelopeUseOriginal	0	Use the original size/position of envelope
cdrEnvelopeCenter	1	Use the original size but re-center the envelope on shape
cdrEnvelopeStretch	2	Re-center the envelope on shape and stretch keeping the original aspect ratio
cdrEnvelopeFit	3	Re-center the envelope on shape and stretch unproportionally to fit