Topic: Change the rate from default 2 to 3

I am stuck with how to change the rate from default 2 to 3... 

The example given in the Wiki manual works fine to double frames:

   # Some input here
   # All parameters set to defaults which means high quality frame doubling
   vectors=SVAnalyse(super, "{}")
   SVSmoothFps(super, vectors, "{}", mt=threads)

But how do I get it to triple frames instead of doubling? I have tried many syntaxes, with no result...

Can anyone help?