e, pi, o, x, y, z, u, v.

( ), +, -, !, *, /.

sqrt, pow, exp, log, int, abs, mod, ceil, floor, sin, cos, tan etc.

#if (A & B) ... #end, #if (A | B) ... #end

#declare value = (FLAG  ? A : B);

V.x, V.y, V.z, ...

vcross(A,B), vdot(A,B), vrotate(A,B), vnormalize(A), ...

concat(S1,S2), strlen(S1), str(A,L,P), strcmp(S1,S2), ...

#declare R = seed(12345);#declare A = rand(R); ...

#declare Center = 0.5*(min_extent (Obj) + max_extent (Obj));

#declare Hit = trace( Obj, Start, Direction, NormalVector );

#if ( inside(Obj, Point) ) ...