Operand Metadesignation

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Some operations require specific operand types. The type of operand is indicated by one of the following letters:

 e - any expression

 v - any expression referring to the variable, to which a value

     can be assigned. Such expressions are called the address ones.

The prefix indicates the type of expression. For example, ie indicates any integer expression. All the possible prefixes are as follows:

 i

 a - the arithmetic expression (the integer number, symbol or

        floating-point number)

 f - the function

Note.