diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex
index 7e677c9..e56f24e 100644
--- a/Doc/lib/libos.tex
+++ b/Doc/lib/libos.tex
@@ -420,8 +420,8 @@
 \end{funcdesc}
 
 \begin{funcdesc}{isatty}{fd}
-Return \code{1} if the file descriptor \var{fd} is open and connected to a
-tty(-like) device, else \code{0}.
+Return \code{True} if the file descriptor \var{fd} is open and
+connected to a tty(-like) device, else \code{False}.
 Availability: \UNIX.
 \end{funcdesc}
 
@@ -1225,24 +1225,56 @@
 Availability: \UNIX.
 \end{datadesc}
 
+\begin{datadesc}{WCONTINUED}
+This option causes child processes to be reported if they have been
+continued from a job control stop since their status was last
+reported.
+Availability: Some \UNIX{} systems.
+\versionadded{2.3}
+\end{datadesc}
+
+\begin{datadesc}{WUNTRACED}
+This option causes child processes to be reported if they have been
+stopped but their current state has not been reported since they were
+stopped.
+Availability: \UNIX.
+\versionadded{2.3}
+\end{datadesc}
+
 The following functions take a process status code as returned by
 \function{system()}, \function{wait()}, or \function{waitpid()} as a
 parameter.  They may be used to determine the disposition of a
 process.
 
+\begin{funcdesc}{WCOREDUMP}{status}
+Returns \code{True} if a core dump was generated for the process,
+otherwise it returns \code{False}.
+Availability: \UNIX.
+\versionadded{2.3}
+\end{funcdesc}
+
+\begin{funcdesc}{WIFCONTINUED}{status}
+Returns \code{True} if the process has been continued from a job
+control stop, otherwise it returns \code{False}.
+Availability: \UNIX.
+\versionadded{2.3}
+\end{funcdesc}
+
 \begin{funcdesc}{WIFSTOPPED}{status}
-Return true if the process has been stopped.
+Returns \code{True} if the process has been stopped, otherwise it
+returns \code{False}.
 Availability: \UNIX.
 \end{funcdesc}
 
 \begin{funcdesc}{WIFSIGNALED}{status}
-Return true if the process exited due to a signal.
+Returns \code{True} if the process exited due to a signal, otherwise
+it returns \code{False}.
 Availability: \UNIX.
 \end{funcdesc}
 
 \begin{funcdesc}{WIFEXITED}{status}
-Return true if the process exited using the \manpage{exit}{2} system
-call.
+Returns \code{True} if the process exited using the \manpage{exit}{2}
+system call, otherwise it returns \code{False}.
 Availability: \UNIX.
 \end{funcdesc}
 
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index fb35b1a..03622b7 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -4529,8 +4529,8 @@
 }
 
 static char posix_isatty__doc__[] =
-"isatty(fd) -> Boolean\n\
-Return true if the file descriptor 'fd' is an open file descriptor\n\
+"isatty(fd) -> bool\n\
+Return True if the file descriptor 'fd' is an open file descriptor\n\
 connected to the slave end of a terminal.";
 
 static PyObject *
@@ -4539,7 +4539,7 @@
 	int fd;
 	if (!PyArg_ParseTuple(args, "i:isatty", &fd))
 		return NULL;
-	return Py_BuildValue("i", isatty(fd));
+	return PyBool_FromLong(isatty(fd));
 }
 
 #ifdef HAVE_PIPE
@@ -4823,10 +4823,65 @@
 
 #ifdef HAVE_SYS_WAIT_H
 
+#ifdef WCOREDUMP
+static char posix_WCOREDUMP__doc__[] =
+"WCOREDUMP(status) -> bool\n\
+Return True if the process returning 'status' was dumped to a core file.";
+
+static PyObject *
+posix_WCOREDUMP(PyObject *self, PyObject *args)
+{
+#ifdef UNION_WAIT
+	union wait status;
+#define status_i (status.w_status)
+#else
+	int status;
+#define status_i status
+#endif
+	status_i = 0;
+
+	if (!PyArg_ParseTuple(args, "i:WCOREDUMP", &status_i))
+	{
+		return NULL;
+	}
+
+	return PyBool_FromLong(WCOREDUMP(status));
+#undef status_i
+}
+#endif /* WCOREDUMP */
+
+#ifdef WIFCONTINUED
+static char posix_WIFCONTINUED__doc__[] =
+"WIFCONTINUED(status) -> bool\n\
+Return True if the process returning 'status' was continued from a\n\
+job control stop.";
+
+static PyObject *
+posix_WCONTINUED(PyObject *self, PyObject *args)
+{
+#ifdef UNION_WAIT
+	union wait status;
+#define status_i (status.w_status)
+#else
+	int status;
+#define status_i status
+#endif
+	status_i = 0;
+
+	if (!PyArg_ParseTuple(args, "i:WCONTINUED", &status_i))
+	{
+		return NULL;
+	}
+
+	return PyBool_FromLong(WCONTINUED(status));
+#undef status_i
+}
+#endif /* WIFCONTINUED */
+
 #ifdef WIFSTOPPED
 static char posix_WIFSTOPPED__doc__[] =
-"WIFSTOPPED(status) -> Boolean\n\
-Return true if the process returning 'status' was stopped.";
+"WIFSTOPPED(status) -> bool\n\
+Return True if the process returning 'status' was stopped.";
 
 static PyObject *
 posix_WIFSTOPPED(PyObject *self, PyObject *args)
@@ -4845,15 +4900,15 @@
 		return NULL;
 	}
 
-	return Py_BuildValue("i", WIFSTOPPED(status));
+	return PyBool_FromLong(WIFSTOPPED(status));
 #undef status_i
 }
 #endif /* WIFSTOPPED */
 
 #ifdef WIFSIGNALED
 static char posix_WIFSIGNALED__doc__[] =
-"WIFSIGNALED(status) -> Boolean\n\
-Return true if the process returning 'status' was terminated by a signal.";
+"WIFSIGNALED(status) -> bool\n\
+Return True if the process returning 'status' was terminated by a signal.";
 
 static PyObject *
 posix_WIFSIGNALED(PyObject *self, PyObject *args)
@@ -4872,14 +4927,14 @@
 		return NULL;
 	}
 
-	return Py_BuildValue("i", WIFSIGNALED(status));
+	return PyBool_FromLong(WIFSIGNALED(status));
 #undef status_i
 }
 #endif /* WIFSIGNALED */
 
 #ifdef WIFEXITED
 static char posix_WIFEXITED__doc__[] =
-"WIFEXITED(status) -> Boolean\n\
+"WIFEXITED(status) -> bool\n\
 Return true if the process returning 'status' exited using the exit()\n\
 system call.";
 
@@ -4900,7 +4955,7 @@
 		return NULL;
 	}
 
-	return Py_BuildValue("i", WIFEXITED(status));
+	return PyBool_FromLong(WIFEXITED(status));
 #undef status_i
 }
 #endif /* WIFEXITED */
@@ -6407,6 +6462,9 @@
 	{"fdatasync",   posix_fdatasync,  METH_O, posix_fdatasync__doc__},
 #endif
 #ifdef HAVE_SYS_WAIT_H
+#ifdef WCOREDUMP
+        {"WCOREDUMP",	posix_WCOREDUMP, METH_VARARGS, posix_WCOREDUMP__doc__},
+#endif /* WCOREDUMP */
 #ifdef WIFSTOPPED
         {"WIFSTOPPED",	posix_WIFSTOPPED, METH_VARARGS, posix_WIFSTOPPED__doc__},
 #endif /* WIFSTOPPED */
@@ -6541,9 +6599,15 @@
 #ifdef TMP_MAX
         if (ins(d, "TMP_MAX", (long)TMP_MAX)) return -1;
 #endif
+#ifdef WCONTINUED
+        if (ins(d, "WCONTINUED", (long)WCONTINUED)) return -1;
+#endif
 #ifdef WNOHANG
         if (ins(d, "WNOHANG", (long)WNOHANG)) return -1;
 #endif
+#ifdef WUNTRACED
+        if (ins(d, "WUNTRACED", (long)WUNTRACED)) return -1;
+#endif
 #ifdef O_RDONLY
         if (ins(d, "O_RDONLY", (long)O_RDONLY)) return -1;
 #endif