BLIMEMAVL        (Clipper )
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  Function : Get total free dynamic memory

  Syntax   : nlValue = BLIMEMAVL()

  Return   : Total available memory in bytes.

  This function returns the total dynamic memory available in bytes in the
  Clipper free pool. Dynamic memory is the memory used by Clipper to store
  all temporary values of variables and buffers while an application is
  running.

  Note that the Clipper Summer '87 free pool is allocated from DOS on an
  'as-needed' basis, and unless MEMORY(0), BLIMEMPAK(-1) or BLIMEMBLK()
  are executed (which cause Clipper to allocate all available memory to
  the free pool from DOS), the value returned by this function will
  reflect only the currently allocated free pool.

  Example  :
  *  Get the total available memory
  *
  ? "There are", BLIMEMAVL()
  ?? " bytes available in Clipper's free pool"