COMPILER DIRECTIVES

     Some input screens do not require the full power of the IOTTT5 unit.
     To save program space,  the IOTTT5 unit can be used in one of two
     modes.

     The default mode is a slimmed down version of the full unit. This mode
     only supports string variables, i.e. the String_Field procedure. The
     user hooks are not available, nor the field Rules.

     The full mode includes all the features described in this chapter. To
     enable the full featured mode, a conditional compiler directive IOFULL
     should be declared in your program and the program should be re-built,
     e.g.

          {$DEFINE IOFULL}