[racket] Inexact numbers :: manual request

I request an entry in the Racket reference manual index under #i so that 
if you run across that notation, you can readily determine that it is 
referring to an inexact number.  (My particular example was 
#i1.4142135623730951, but there are clearly too many to list each one. :-)

Also an example given in the discussion of numeric types would help.  
The concept is mentioned, but I didn't encounter any examples of the 
notation.  A simple:
 > (sqrt 2)
#i1.4142135623730951
would have clarified things.

-- 
Charles Hixson