[R] F Distribution

[Robert Sherry]

When I use a table, from a Schaum book, I see that for the 95 
percentile, with v_1 = 1 and v_2 = 1 the value is 161. In the modern era,
looking values up in a table is less than ideal. Therefore, I would 
expect R to have a function to do this and based upon my
reading of the documentation, I would expect the following call to get 
the value I expect:
      pf( .95,1, 1)
However, it produces
     0.4918373
Therefore, I conclude that I am using the wrong function. What function 
should I use?

Thanks
Bob