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                        E R R O R   M E S S A G E S

  Because WNDWC is so powerful, it writes to screen in memory as well as the
  CRT.  Should you make a mistake in programming, it may not show up on the
  CRT screen.  So, to prevent the errors before they happen, programs written
  with errors will terminate with an error message window on the CRT to
  reveal the problem.  The program terminates through the GOOF module, which
  can be freely edited.

  "Not enough heap space" - There is not enough far heap space.  Too much
  memory is being taken.  When running under the Turbo C environment in the
  Small or Medium models, you may get this error if you set your near heap
  size (_heaplen) to anything very large.  This will cause the near heap to
  take a greater portion of available memory, leaving a smaller amount for
  the far heap.  This is disastrous since WNDWC does all allocating on the
  far heap.

  "Too many windows" - Tried to create more windows than MAXWINDOW allows.
  Either remove windows or increase MAXWINDOW.

  "Too many virtual windows" - Tried to create more virtual windows than
  MAXVIRTUALWINDOW allows.  Either remove windows or increase
  MAXVIRTUALWINDOW.

  "Perm window out of order" - Tried to create a PERMMODE window while a
  normal window is the top window.  Remove or hide window before making a
  permanent window.  Routinely, all PERMMODE windows are created first.

  "No window to remove" - Tried to remove the initial window WINDOW0 which is
  permanent.

  "Hidden window not found" - Tried to write to a hidden window that does not
  exist.  Check for the correct name.

  "Virtual screen not found" - Tried to write to a virtual screen that does
  not exist.  Check for the correct name.

  "Video page not available" - Tried to write to a video page that has not
  been allocated or does not exist for the hardware as expected.  Be sure to
  use maxvalidpage.
.