i1 : S = surface {7,3,9};
o1 : ProjectiveVariety, surface in PP^5

i2 : coefficientRing S
ZZ
o2 = 
65521
o2 : QuotientRing

i3 : T = surface({7,3,9},ZZ/33331);
o3 : ProjectiveVariety, surface in PP^5

i4 : X = specialCubicFourfold T;
o4 : ProjectiveVariety, cubic fourfold containing a surface of degree 10 and sectional genus 6

i5 : coefficientRing X
ZZ
o5 = 
33331
o5 : QuotientRing

i6 : describe X
o6 = Special cubic fourfold of discriminant 26
containing a (smooth) surface of degree 10 and sectional genus 6
cut out by 10 hypersurfaces of degree 3
