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Author : ied
Date   : 26/11/1998
Object : Initialisation of the history for K4L
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Author : rln
Date   : 12/02/1999
Object : _UpdateCreationDate, _UpdateLastChange - S4151 (explicitly
           force YYMMDD.HHMMSS before Y2000 and YYYYMMDD.HHMMSS after Y2000)
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Author : cky
Date   : 11/03/1999
Object : NEW classes : SelectPCurves (a Selection) to get pcurves of faces
	  SetLabel (a Modifier) to clear or set IGES Label/Subscript
	  RemoveCurves (a Modifier) to remove pcurves or curves-3d from faces
	_Activator : new function setuseflag  to set useflag to a new value
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Author : szv, smh
Date   : 16/04/1999
Object : S4163
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