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open-axiom repository from github

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/*

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  Copyright (C) 1991-2002, The Numerical Algorithms Group Ltd.

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  All rights reserved.

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  Copyright (C) 2007-2008, Gabriel Dos Reis.

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  All rights resrved.

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  Redistribution and use in source and binary forms, with or without

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  modification, are permitted provided that the following conditions are

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  met:

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      - Redistributions of source code must retain the above copyright

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        notice, this list of conditions and the following disclaimer.

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      - Redistributions in binary form must reproduce the above copyright

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        notice, this list of conditions and the following disclaimer in

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        the documentation and/or other materials provided with the

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        distribution.

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      - Neither the name of The Numerical Algorithms Group Ltd. nor the

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        names of its contributors may be used to endorse or promote products

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        derived from this software without specific prior written permission.

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  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

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  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED

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  TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

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  PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER

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  OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

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  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

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  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

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  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

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  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

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  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

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  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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*/

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extern viewManager *viewports,*slot,*stepSlot;

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extern OpenAxiom::openaxiom_sio* spadSock;

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extern int         viewType, viewCommand; 

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extern fd_set         filedes;

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extern int             acknow;

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extern int         graphKey; 

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extern graphStruct *graphList;

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extern const char* s1;

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extern Display *dsply;

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extern int     defDsply;

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extern Window  root;

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extern XEvent  viewmanEvent;

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extern int              currentGraph;

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extern graphStateStruct currentGraphState;

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extern int picked;

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extern int viewOkay;

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extern int viewError;

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extern int checkClosedChild,

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           foundBrokenPipe;

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extern char propertyBuffer[];

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