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DESCRIPTION OF THE REFERENCE LANGUIZGE

I Structure ofthe 1,anguageAs stated in the introduction, the algorithmic languagew three different kinds of representations-reference,

ardware, and publication-

and the development de-:ribed in the sequel is in terms of the reference repre-:ntation. This means that all objects defined within the.nguage are representedby a given set of symbols-andis only in the choice of symbols th at the other two

:Presentations may differ. Structure and content must

e the same forall representations.The purpose of the algorithmic language i:! t o describe)mputational processes. The basic concept used for themcription of calculating rules is the well-kiown arith-tic expression containing as constituents numbers, vari-b k and functions. From such expressions are com-Ounded, by applying rules of arithmetic composition,

Wrrs sicli (Iberiaiur,t wuen Ii1sst. h w t .sic11 klrir sauen; u n d w n v o n rnnn niclitreden knnn . darllber rniisa man s c l i w e i uen .

L o v w I o WI TTCI ENRTE I N .self-contained units of the language-explicit formitlac-called assignment statements.

To show the flow of computational processes, cert,nirinonarithmetic statements and st,atement clauses areadded which may describe, e.g., a!ternatives, or iterativcrepetitions of computing statements. Since it is necessary

for the function of these statements that one statement

refer to another, statements may be provided with labels.

A sequence of statements may be enclosed between the

statement brackets begin and end to form a compoundstatement.

Statements are supported by declarations which are not

themselves computing instructions but inform the trans-

lator of the existence and certain properties of objects

appearing in statements, such as the class of numberstaken on as values by a variable, the dimension of an

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e first arithmetic expression following this Booleanlargest arithmetic expression found in this position

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