- o -
- offset
: _BlobInfo
, _CacheInfo
, _StopInfo
, _MimeInfo
, _CubeInfo
, _Image
, _SignatureInfo
, _TokenInfo
, _Ascii85Info
, _MagicMapInfo
, _XMLTreeInfo
, _MagicInfo
- opacity
: _RealPixelPacket
, _MagickPixelPacket
, _PixelPacket
, _QuantumPixelPacket
, _LongPixelPacket
, _DrawInfo
, _DoublePixelPacket
- options
: _ImageInfo
- ordered
: _XMLTreeInfo
- orientation
: _ImageInfo
, _Image
- origin
: _TypeMetric
- outer_bevel
: _FrameInfo