rem: case MB_MORPHOS:
context: AHIFreeVec( APTR memoryBlock ){  switch( MixBackend )  {    case MB_NATIVE:    case MB_MORPHOS:      FreeVec( memoryBlock );      return;    case MB_WARPUP:      FreeVec32( memoryBlock );      return;  }  Req( "Internal error: Unknown MixBackend in AHIFreeVec()." );}