What is about the Logical Screen Descriptor of GIF files?

Submitted by: Muhammad
Logical Screen Descriptor has the following information.

☛ - Logical Screen Width: The width of the image that represents in pixels
☛ - Logical Screen Height: The image height in pixels.
☛ - Packed Field: The element of the image for animation.
☛ - Background Color Index: A value that is pointing to a color in the Global Color Table.
☛ - Pixel Aspect Ratio: The approximate aspect ratio of the pixel in the GIF image
Submitted by: Muhammad

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