ocr: The Expression Builder This dialog appears whenever OXBASE*/Mac needs an expression in order to complete a command. You'll encounter this dialog, for instance, when you create an index expression set. a relation, or specify a For or While clause. An expression is an item or items that, when evaluated, form a new value that can be a Character, Numeric, Logical, or Date type. An expression can be as simple as a single variable or number, or it can be very complicated and as long as 254 characters. Expressions are generally formed with a combination of the following elements: Database field names ...
