--- a/Doc/lib/libthread.tex	Thu Jun 02 13:52:07 2005 +0000
+++ b/Doc/lib/libthread.tex	Thu Jun 02 17:01:08 2005 +0000
@@ -81,11 +81,11 @@
 Without the optional argument, this method acquires the lock
 unconditionally, if necessary waiting until it is released by another
 thread (only one thread at a time can acquire a lock --- that's their
-reason for existence), and returns \code{None}.  If the integer
+reason for existence).  If the integer
 \var{waitflag} argument is present, the action depends on its
 value: if it is zero, the lock is only acquired if it can be acquired
 immediately without waiting, while if it is nonzero, the lock is
-acquired unconditionally as before.  If an argument is present, the
+acquired unconditionally as before.  The
 return value is \code{True} if the lock is acquired successfully,
 \code{False} if not.
 \end{methoddesc}