Postscript also supports scalable font technology which allows changing the font size. The Postscript fonts are generally named outline fonts because each character has an outline defined for itself. It considers them as a set of geometrical objects instead of bit maps. Postscript has a different way of treating images and fonts. Some of the important functions in PostScript include complex drawing and scaling which are not available in PCL drivers. Postscript includes many advanced functions when compared to PCL drivers. The PCL drivers send the information to the printer in the binary form. Postscript drivers often send the entire page description to the printers where it is used. PCL drivers are often used for rendering on the local workstation, and PCL printing is much faster than Postscript because of this reason. PCL is also a printer command language as a page description language developed by Hewlett Packard for their laser and ink-jet printers. Postscript is a page description language developed by Adobe systems generally used on a laser printer for printing documents.
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