{$undef DEBUGGING}      {define to enable test code}
{$define OVERLAY}       {DEFINE to enable overlay code}

{$I+}    {I/O checking}
{$N-}    {Numeric coprocessor}
{$V-}    {Relaxes string typing}
{$B-}    {Boolean complete evaluation}
{$S-}    {Stack checking}
{$R-}    {Range checking}
{$D+}    {Global debug information}
{$L+}    {Local debug information}