The allowed components of an expression are listed below.

1.

Arithmetic Operators

+

(sum)

-

(difference)

*

(multiply)

/

(floating point division)

\

(integer division, i.e., dropping the decimal part of the result)

%

(divide and return remainder)

^

(exponential)

2.

Parentheses ( ), to change operator precedence. The default order is left to right, with exponentials first, multiplications and divisions next, and finally sums and differences.

3.

Any integer or floating point number. Negative numbers must be parenthesized WITHOUT whitespaces, like "(-12)".

4.

Field tag and extensions, like [LookupValueField]([LookupKeyField]=[Field]{Column})

5.

System values, like PageNum

6.

Statistical functions, like LRCC([Field1],[Field2])

7.

Variables

Examples:

<?( [Field] )?> is equivalent to <?[Field]?>

<?( [Bytes] / 1024 )@#,##0?> kB

<?IF([Diff]<0)?><?((-1)*[Diff])@#,##0?><?ELSE?><?[Diff]@#,##0?><?ENDIF?>