Читал спеку, наткнулся на такое:
SDL is an object-oriented, formal language defined by The International Telecommunications Union — Telecommunications (ITU–T) Standardization Sector [formerly Comité Consultatif International Telegraphique et Telephonique (CCITT)] as Recommendation Z.100. The language is intended for the specification of complex, event-driven, real-time, and interactive applications involving many concurrent activities that communicate using discrete signals. SDL is usually used in combination with other languages: message sequence chart, Abstract Syntax Notation Number 1 (ASN.1), and TTCN. The use of traditional SDL state models, message sequence charts, and ASN.1 is a powerful combination that covers most aspects of system engineering.

Выглядит как гов^W-то так:
Кстати, в более свежих версиях спеки это говно выкинули.

#osnfei

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