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Rev 999 Rev 1079
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gif.Block.Introducer.Extension	     = 0x21
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gif.Block.Introducer.Extension	     = 0x21
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gif.Block.Introducer.ImageDescriptor = 0x2C
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gif.Block.Introducer.ImageDescriptor = 0x2C
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gif.Block.Introducer.EndOfFile	     = 0x3B
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gif.Block.Introducer.EndOfFile	     = 0x3B
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struct gif.ImageDescriptor ; GIF87a
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; we read Introducer before parsing gif.ImageDescriptor,
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struct gif.ImageDescriptor ; GIF87a
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; so it is convenient to not include it in struct
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  b	     gif.Block ; Introducer = 2Ch (',')
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;  b	     gif.Block ; Introducer = 2Ch (',')
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  Left	     dw ?      ; X position of image on the display
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  Left	     dw ?      ; X position of image on the display
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  Top	     dw ?      ; Y position of image on the display
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  Top	     dw ?      ; Y position of image on the display
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  Width      dw ?      ; Width of the image in pixels
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  Width      dw ?      ; Width of the image in pixels
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  Height     dw ?      ; Height of the image in pixels
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  Height     dw ?      ; Height of the image in pixels
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gif.Extension.Label.GraphicsControl = 0xF9
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gif.Extension.Label.GraphicsControl = 0xF9
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gif.Extension.Label.Comment	    = 0xFE
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gif.Extension.Label.Comment	    = 0xFE
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gif.Extension.Label.Application     = 0xFF
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gif.Extension.Label.Application     = 0xFF
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struct gif.PlainTextExtension ; GIF89a
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struct gif.PlainTextExtension ; GIF89a
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  e		   gif.Extension ; Label = 01h
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;  e		   gif.Extension ; Label = 01h
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  BlockSize	   db ? 	 ; Size of Extension Block (always 0Ch)
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;  BlockSize	   db ? 	 ; Size of Extension Block (always 0Ch)
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  TextGridLeft	   dw ? 	 ; X position of text grid in pixels
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  TextGridLeft	   dw ? 	 ; X position of text grid in pixels
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  TextGridTop	   dw ? 	 ; Y position of text grid in pixels
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  TextGridTop	   dw ? 	 ; Y position of text grid in pixels
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  TextGridWidth    dw ? 	 ; Width of the text grid in pixels
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  TextGridWidth    dw ? 	 ; Width of the text grid in pixels
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  TextGridHeight   dw ? 	 ; Height of the text grid in pixels
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  TextGridHeight   dw ? 	 ; Height of the text grid in pixels
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  PlainTextData    db ? 	 ; The Plain Text data (*)
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  PlainTextData    db ? 	 ; The Plain Text data (*)
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; Terminator       db ?          ; Block Terminator (always 0)
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; Terminator       db ?          ; Block Terminator (always 0)
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ends
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ends
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struct gif.GraphicsControlExtension ; GIF89a
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struct gif.GraphicsControlExtension ; GIF89a
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  e	     gif.Extension ; Label = F9h
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;  e	     gif.Extension ; Label = F9h
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;  BlockSize  db ?	   ; Size of remaining fields (always 04h)
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; previous fields are not included in this structure for convenience
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  BlockSize  db ?	   ; Size of remaining fields (always 04h)
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; (they are parsed before this)
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  Packed     db ?	   ; Method of graphics disposal to use
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  Packed     db ?	   ; Method of graphics disposal to use
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  DelayTime  dw ?	   ; Hundredths of seconds to wait
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  DelayTime  dw ?	   ; Hundredths of seconds to wait
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  ColorIndex db ?	   ; Transparent Color Index
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  ColorIndex db ?	   ; Transparent Color Index
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; Terminator db ?          ; Block Terminator (always 0)
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; Terminator db ?          ; Block Terminator (always 0)
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ends
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ends
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;;------------------------------------------------------------------------------------------------;;
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;;------------------------------------------------------------------------------------------------;;
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struct gif.Image
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struct gif.Image
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  info gif.ImageDescriptor
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  gce  gif.GraphicsControlExtension
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  gce  gif.GraphicsControlExtension
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  info gif.ImageDescriptor
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;  lsd  gif.LogicalScreenDescriptor ; saved only in first image