From Graal Bible

Graphics are things that talented people make for games, sites, almost anything to do with technology. Graal uses Raster image formats such as JPEG, GIF, and PNG formats. The GIF and JPEG are currently being replaced by PNG as per Stefan's request. Vector graphics are not implemented in Graal's engine and no plans are known if they will be implemented, however the GScript command showpoly(index,array) is sufficient for most applications of vector graphics.

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