It may also be called directly to evaluate an expression. This manual page describes the calculator and gives some examples.
Type conversion is automatic in most useful cases.
Field Values Expressions are always evaluated with a reference to a single record in a Datascope table. The names of fields in that table are recognized, and appear unadorned, like a variable name. A variety of functions are implemented. Following standard programming practice, they are announced by the presence of a parenthesized, comma separated list following the function name. Regular Expressions Regular expressions are built into the calculator.