Dear all 

I am trying to compose two manifolds. I want to apply a 90 deg rotation about 
x-axis to PolarManifold to obtain description of surface of sphere and thereby 
avoid the poles.

So I try something like this

      static PolarManifold<2,3> sphere;
      static FunctionManifold<3,3,3> rotate("x,-z,y","x,z,-y”);

Now I am confused on how to compose these two. What I need is 

sphere * rotate

In the documentation

is the result F*G or G*F ?

In the template parameters, could you explain the “first” and “second”. If you 
specify “F” or “G” instead of “first” and “second", it will be more clear I 


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