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diff --git a/texmf-dist/scripts/ketpic/ketlib/ketpicscifiles6/Ptnw.sci b/texmf-dist/scripts/ketpic/ketlib/ketpicscifiles6/Ptnw.sci
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+//
+// 10.01.13
+
+function Out=Ptnw(varargin)
+ global XMIN XMAX YMIN YMAX
+ if length(varargin)==0
+ Out=[XMIN,YMAX];
+ else
+ G=varargin(1);
+ Xm=min(G(:,1));
+ YM=max(G(:,2));
+ Out=[Xm,YM];
+ end;
+ endfunction