Usage	This tag allows the retrieval of information about a particular image. The name of the image is specified in NAME and the type of information is specified in TYPE.
	TRANSPARENT - returns the current transparent colour index, if no transparent colour is set then this will return -1.
	INTERLACED - returns TRUE if the image is interlaced and FALSE if the image is not interlaced
	WIDTH - returns the width of the image in pixels
	HEIGHT - returns the height of the image in pixels
	TOTAL - returns the total number of colours in the image