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Computing (FOLDOC) dictionary
Basic Language for Implementation of System Software
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language (BLISS, or allegedly, "System Software
Implementation Language, Backwards") A language designed by
W.A. Wulf at CMU around 1969.
and typeless, with exception handling facilities,
coroutines, a macro system, and a highly optimisingcompiler. It was one of the first non-assembly languages
for operating system implementation. It gained fame for its
lack of a goto and also lacks implicit dereferencing: all
symbols stand for addresses, not values.
Another characteristic (and possible explanation for the
backward acronym) was that BLISS fairly uniformly used
backward keywords for closing blocks, a famous example being
ELUDOM to close a MODULE. An exception was BEGIN...END though
you could use (...) instead.