Graphical Kernel System
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![PDF] Presenting GPSS/H results with the Graphical Kernel System ...](/imgres?imgurl=https://d3i71xaburhd42.cloudfront.net/5a40390ee5bcdb71045e8608dfd3afda25cfb343/2-Figure1-1.png&imgrefurl=https://www.semanticscholar.org/paper/Presenting-GPSS-H-results-with-the-Graphical-Kernel-Parambi-Chandawarkar/5a40390ee5bcdb71045e8608dfd3afda25cfb343&h=812&w=606&tbnid=v8GNfuJhUZ2AQM&q=Graphical+Kernel+System&tbnh=144&tbnw=107&usg=AI4_-kTgCMCHxqvpLfoHg4rGwc614utJPA&vet=1&docid=B9xO71U3g_Ke9M&sa=X&ved=2ahUKEwiPyoTl0t6FAxW-QkEAHVSPBHwQ9QF6BAgAEAc)
The Graphical Kernel System was the first ISO standard for low-level computer graphics, introduced in 1977. A draft international standard was circulated for review in September 1983.
Final ratification of the standard was achieved in 1985. Wikipedia