SIMSCRIPT II.5 Programming Language

Appendix C. SIMSCRIPT Reference Syntax
temporary entities
Preamble statement marking the start of temporary entity declarations.
the system [ may | can ]
{ has { { a | an | the | some } attribute name
[ ( { integer/integer | */integer | integer-integer } ) ]
[ in { array | word } integer | function ]
} < comma >
| owns { { a | an | the | some } set } < comma >
| has { a | an | the | some } attribute name
random [ step | linear ] variable
[ in { word | array } integer ]
} < comma >
Specifies attributes of the system and sets owned by the system. Also specifies optional attribute
packing, equivalences, word assignments, and functions.
[ then ] if - See if.
trace [ using [ tape | unit ] expression ]
Produces a backtrack of the current function and subroutine calls. Trace is executed automatically
when SIMSCRIPT detects an error during execution. In this case, the standard listing device is
used.
upon - See event.
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