FUNCTION PLSWAIT()

  Short:
  ------
  PLSWAIT() Pops up a 'Please Wait' window or removes it

  Returns:
  --------
  Nothing

  Syntax:
  -------
  PLSWAIT(lOnOff,[cMessage],[nTop,nLeft,nBottom,nRight])

  Description:
  ------------
  Pops up a window with a 'please wait' message or
  removes a previous 'please wait' window.

  <lOnOff> True means show popup window, False means
  remove window.

  [cMessage] - message. Default is 'Please wait...'

  [nTop,nLeft,nBottom,nRight] box coordinates. Defaults
  are 10,20,12,60.

  Examples:
  ---------
   PLSWAIT(.T.,"I'm thinking...")

   // code here

   PLSWAIT(.F.)   // remove plswait message

  Source:
  -------
  S_PLSW.PRG