Incorporate TimToady++'s suggestions.

S02-bits.pod

@@ -788,10 +788,10 @@ unreduced values.  You can use C<$rat.=norm> to normalize the fraction.
 The C<.perl> method will produce a decimal number if the denominator is
 a power of 10, or normalizable to a power of 10 (that is, having factors
 of only 2 and 5 (and -1)). Otherwise it will normalize and return a rational
-literal of the form C<< <-47/3> >>. Stringifying a rational via C<.gist>
-or C<.Str> returns an exact decimal number if possible, and rounds off
-the repeated decimal otherwise. For full details see the documentation
-of C<Rat.gist> in S32.
+literal of the form C<< <-47/3> >>.  Stringifying a rational via C<.gist>
+or C<.Str> returns an exact decimal number if possible, and otherwise rounds
+off the repeated decimal based on the size of the denominator.  For full 
+details see the documentation of C<Rat.gist> in S32.
 
 C<Num.Str> and C<Num.gist> both produce valid Num literals, so they must
 include the C<e> for the exponential.