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diff --git a/texmf-dist/scripts/ketpic/ketlib/ketpic2escifiles6/Intersectlines.sci b/texmf-dist/scripts/ketpic/ketlib/ketpic2escifiles6/Intersectlines.sci
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+++ b/texmf-dist/scripts/ketpic/ketlib/ketpic2escifiles6/Intersectlines.sci
@@ -0,0 +1,22 @@
+// 09.10.11
+// 09.10.12
+
+function Out=Intersectlines(L1,L2)
+ Eps0=10^(-6);
+ P=Ptstart(L1);
+ a1=P(1); a2=P(2);
+ V=Ptend(L1)-P;
+ b1=V(1); b2=V(2);
+ P=Ptstart(L2);
+ c1=P(1); c2=P(2);
+ V=Ptend(L2)-P;
+ d1=V(1); d2=V(2);
+ Den=b1*d2-d1*b2;
+ if abs(Den)<Eps0
+ Out=[];
+ return;
+ end;
+ x=-(d1*b2*a1-c1*b1*d2-d1*a2*b1+d1*b1*c2)/Den;
+ y=-(-a2*b1*d2+b2*a1*d2-b2*c1*d2+c2*d1*b2)/Den;
+ Out=[x,y];
+endfunction;