Index: libs/predef/doc/predef.qbk
===================================================================
--- libs/predef/doc/predef.qbk	(revision 86044)
+++ libs/predef/doc/predef.qbk	(working copy)
@@ -398,9 +398,9 @@
 #include <boost/predef/make.h>
 ``
 
-One will get a set of utlity macros to decompose common version
+One will get a set of utility macros to decompose common version
 macros as defined by compilers. For example the EDG compiler
-uses a simple 3-digit version macro (M,N,P). It can be decomesed
+uses a simple 3-digit version macro (M,N,P). It can be decomposed
 and defined as:
 
 ``
@@ -454,10 +454,10 @@
 
 [endsect]
 
-[section Acknoledgements]
+[section Acknowledgements]
 
 The comprehensiveness of this library would not be
-possible without the existance of the indispensible
+possible without the existence of the indispensable
 resource that is the
 [@http://sourceforge.net/p/predef/ Pre-defined C/C++ Compiler Macros]
 Project. It was, and continues to be, the primary source