manual.texi Change note mod, 4.0.2.

Docs/manual.texi

@@ -48943,9 +48943,10 @@ Our TODO section contains what we plan to have in 4.0. @xref{TODO MySQL 4.0}.
 
 @itemize @bullet
 @item
-fixed that SQL_CALC_FOUND_ROWS works with UNIONs. It will work only if first 
-select has this option and if there is global LIMIT for entire select. For the
-moment this requires using braces for individual select's.
+Fix @code{SQL_CALC_FOUND_ROWS} to work with @code{UNION}s. It will work only
+if the first @code{SELECT} has this option and if there is global @code{LIMIT}
+for the entire statement. For the moment, this requires using parentheses for
+individual @code{SELECT} queries within the statement.
 @item
 Don't give an error for @code{CREATE TABLE ...(... VARCHAR(0))}.
 @item