"Source: Text/Incidence/Plane.text";
"Line: 158";
"Date: Fri Sep 26 12:10:10 2025";
"Main: Fri Sep 26 14:29:19 2025";
// original file: Text/Incidence/Plane.text, line: 158
// Example: H154E1 ()
print "Example: H154E1";
ei := GetEchoInput();
SetEchoInput(true);
P, V, L := FiniteProjectivePlane(3);
P;
V;
L;
A := FiniteAffinePlane< 4 | Setseq(Subsets({1, 2, 3, 4}, 2)) >;
A: Maximal;
P, V, L := FiniteProjectivePlane(16);
time P2 := FiniteProjectivePlane<
    Points(P) | {Set(l): l in L} : Check := true >;
time P2 := FiniteProjectivePlane<
    Points(P) | {Set(l): l in L} : Check := false >;
SetEchoInput(ei);
