sys.setcheckinterval(x) instead of sys.check_interval = x
diff --git a/Doc/lib/libsys.tex b/Doc/lib/libsys.tex
index 2ea4c37..9467415 100644
--- a/Doc/lib/libsys.tex
+++ b/Doc/lib/libsys.tex
@@ -20,16 +20,6 @@
modules.)
\end{datadesc}
-\begin{datadesc}{check_interval}
-When this variable is set to an integer value, it determines how often
-the interpreter checks for periodic things such as thread switches and
-signal handlers. The default is 10, meaning the check is performed
-every 10 Python virtual instructions. Setting this to a large value
-may increase performance for programs using threads. Setting it to a
-value <= 0 checks every virtual instruction, maximizing responsiveness
-as well as overhead.
-\end{datadesc}
-
\begin{datadesc}{exc_type}
\dataline{exc_value}
\dataline{exc_traceback}
@@ -92,6 +82,16 @@
\code{'>>> '} and \code{'... '}.
\end{datadesc}
+\begin{funcdesc}{setcheckinterval}{interval}
+Set the interpreter's ``check interval''. This integer value
+determines how often the interpreter checks for periodic things such
+as thread switches and signal handlers. The default is 10, meaning
+the check is performed every 10 Python virtual instructions. Setting
+it to a larger value may increase performance for programs using
+threads. Setting it to a value <= 0 checks every virtual instruction,
+maximizing responsiveness as well as overhead.
+\end{datadesc}
+
\begin{funcdesc}{settrace}{tracefunc}
Set the system's trace function, which allows you to implement a
Python source code debugger in Python. The standard modules