MeshFile cube.msh

LevelSet 10 2 Function Scalar 0.*x+0.*y+1.*z+0.3 [x,y,z]

//Plane: define the plane _a*x+_b*y+_c*z+_d, with outward normal (_a,_b,_c)
//Sphere: define the sphere sqrt((_xc-x)*(_xc-x)+(_yc-y)*(_yc-y)+(_zc-z)*(_zc-z))-_r, with center (_xc,_yc,_zc) and radius _r