If this switch is on, all function or procedure parameters of type string are considered to be open string parameters; this parameter only has e ect for short strings, not for ansistrings.
When using openstrings, the declared type of the string can be di erent from the type of string that is actually passed, even for strings that are passed by reference. The declared size of the string passed can be examined with the High(P) call.
Default the use of openstrings is o .