Cybil (short for the Cyber Implementation Language of the Control Data Network Operating System) was a Pascal-like language developed at Control Data Corporation for the Cyber computer family.
[1][2] Cybil was used as the implementation language for the NOS/VE operating system[3] on the CDC Cyber series and was also used to write the eOS operating system for the ETA10 supercomputer in the 1980s.
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