diff -r 29b8ec9195ff Modules/fcntlmodule.c
--- a/Modules/fcntlmodule.c	Mon Sep 16 04:03:12 2013 +0200
+++ b/Modules/fcntlmodule.c	Mon Sep 16 21:48:32 2013 +0800
@@ -80,8 +80,8 @@
 "fcntl(fd, opt, [arg])\n\
 \n\
 Perform the requested operation on file descriptor fd.  The operation\n\
-is defined by op and is operating system dependent.  These constants are\n\
-available from the fcntl module.  The argument arg is optional, and\n\
+is defined by opt and is operating system dependent.  The possible values of\n\
+opt are available from the fcntl module.  The argument arg is optional, and\n\
 defaults to 0; it may be an int or a string.  If arg is given as a string,\n\
 the return value of fcntl is a string of that length, containing the\n\
 resulting value put in the arg buffer by the operating system.  The length\n\
@@ -104,7 +104,7 @@
        whereas the system expects it to be a 32bit bit field value
        regardless of it being passed as an int or unsigned long on
        various platforms.  See the termios.TIOCSWINSZ constant across
-       platforms for an example of thise.
+       platforms for an example of this.
 
        If any of the 64bit platforms ever decide to use more than 32bits
        in their unsigned long ioctl codes this will break and need
@@ -306,9 +306,9 @@
 }
 
 PyDoc_STRVAR(flock_doc,
-"flock(fd, operation)\n\
+"flock(fd, opt)\n\
 \n\
-Perform the lock operation op on file descriptor fd.  See the Unix \n\
+Perform the lock operation opt on file descriptor fd.  See the Unix \n\
 manual page for flock(3) for details.  (On some systems, this function is\n\
 emulated using fcntl().)");