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Author : ied
Date   : 26/11/1998
Object : Initialisation of the history for K4L
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Author : gka
Date   : 04/12/1998
Object : FRA61952,FRA61954,FRA61955,FRA61956,FRA61957,FRA61958,FRA61959
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Author : rln
Date   : 06/01/1999
Object : _GeomCurve - CCI60005 (avoiding writing B-Splines with huge weights from full circles),
                      PRO17015 (writing ellipses with big radii)
         _GeomEntity - new method SetUnit
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Author : pdn, abv
Date   : 18/01/1999
Object : _GeomCurve - 
            CTS22023: writing offset curves and detecting planar curves
            CTS22023: cutting bspline curves (for Euclid3)
            CTS22021: using QuasiAngular parametrisation for circles (more precise)
            CTS22022-1: protection against exceptions in Segment()
         _GeomSurface -
            CTS22022: writing full tori
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Author : abv
Date   : 18/03/1999
Object : _GeomCurve.cxx - PRO17828: using GeomConvert_ApproxCurve for converting circle to bspline
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Author : szv, smh
Date   : 16/04/1999
Object : S4163
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Author : pdn
Date   : 20/04/1999
Object : _GeomSurface.cdl, _GeomSurface.cxx - S4181: writing IGES elementary surfaces
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