Editing CORAL (section)

== Variants ==
A variant of Coral 66 named PO-CORAL was developed during the late 1970s to early 1980s by the British [[General Post Office]] (GPO), together with [[General Electric Company|GEC]], STC and [[Plessey]], for use on the [[System X (telephony)|System X]] digital telephone exchange control computers. This was later renamed BT-CORAL when [[British Telecom]] was spun off from the Post Office. Unique features of this language were the focus on real-time execution, message processing, limits on statement execution between waiting for input, and a prohibition on recursion to remove the need for a [[Stack (abstract data type)|stack]].{{Citation needed|date=December 2020}}