An Xbasic expression.
The context in which the expression should be evaluated. This can be a list of tables in a CR-LF delimited list. It can also be the name of an open form (suffixed by ".this"), which would evaluate the expression in the context of the form.
Internal Use Only.
Returns the result of the expression.
Return the result of the expression (parses an expression stored in a string, and evaluates it).