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Terminology

In describing Algol 68, it is necessary to use a number of technical terms which have a specialist meaning. However, the number of terms used has been reduced to a minimum. Whenever a term is introduced it will be written in bold. Parts of programs are printed as though they had been produced by a typewriter like this:

       BEGIN

Some of the terminology may seem pedantic. Describing the parts of an Algol 68 program can, and should be, precise. The power of Algol 68 derives as much from the precision as from the generality of its ideas.