Document change made to number of preallocated integers.
diff --git a/Doc/api/concrete.tex b/Doc/api/concrete.tex
index f82f7c7..cacefb1 100644
--- a/Doc/api/concrete.tex
+++ b/Doc/api/concrete.tex
@@ -156,7 +156,7 @@
Create a new integer object with a value of \var{ival}.
The current implementation keeps an array of integer objects for all
- integers between \code{-1} and \code{100}, when you create an int in
+ integers between \code{-5} and \code{256}, when you create an int in
that range you actually just get back a reference to the existing
object. So it should be possible to change the value of \code{1}. I
suspect the behaviour of Python in this case is undefined. :-)