license.txt

pipedata3d - piping component data and dimension in 3d.
Copyright (C) 2015  Shing Liu

pipedata3d is free software. If you think it is useful, 
you can donate for the author.

This software is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Portions of this software:
Open CASCADE Technology
  Copyright (c) 1993-1999 Matra Datavision. All rights reserved.
  Copyright (c) 1999-2015 by OPEN CASCADE S.A.S. All rights reserved.

FreeType
  Copyright 1996-2002, 2006 The FreeType Project. All rights reserved.

TclTk
  TclTk is copyrighted by the Regents of the University of California,
  Sun Microsystems, Inc., Scriptics Corporation, ActiveState
  Corporation and other parties.

Feedback:
Please send any bug report, suggestion, question and comment 
to the author at following address: eryar@163.com