diff --git a/Doc/boilerplate.tex b/Doc/boilerplate.tex
new file mode 100644
index 0000000..f8fc959
--- /dev/null
+++ b/Doc/boilerplate.tex
@@ -0,0 +1,8 @@
+\author{
+	Guido van Rossum \\
+	Dept. CST, CWI, P.O. Box 94079 \\
+	1090 GB Amsterdam, The Netherlands \\
+	E-mail: {\tt guido@cwi.nl}
+}
+
+\date{6 Oct 1994 \\ Release 1.1} % XXX update before release!
diff --git a/Doc/copyright.tex b/Doc/copyright.tex
new file mode 100644
index 0000000..f445c40
--- /dev/null
+++ b/Doc/copyright.tex
@@ -0,0 +1,22 @@
+Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
+Amsterdam, The Netherlands.
+
+\begin{center}
+All Rights Reserved
+\end{center}
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the names of Stichting Mathematisch
+Centrum or CWI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior permission.
+
+STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
+THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
+FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/Doc/ext.tex b/Doc/ext.tex
index 48cf0d1..3dc3c45 100644
--- a/Doc/ext.tex
+++ b/Doc/ext.tex
@@ -2,14 +2,7 @@
 
 \title{Extending and Embedding the Python Interpreter}
 
-\author{
-	Guido van Rossum \\
-	Dept. CST, CWI, P.O. Box 94079 \\
-	1090 GB Amsterdam, The Netherlands \\
-	E-mail: {\tt guido@cwi.nl}
-}
-
-\date{14 July 1994 \\ Release 1.0.3} % XXX update before release!
+\input{boilerplate}
 
 % Tell \index to actually write the .idx file
 \makeindex
@@ -20,6 +13,8 @@
 
 \maketitle
 
+\input{copyright}
+
 \begin{abstract}
 
 \noindent
@@ -427,7 +422,7 @@
     object *result;
     ...
     /* Time to call the callback */
-    arglist = mktuple(0);
+    arglist = newtupleobject(0);
     result = call_object(my_callback, arglist);
     DECREF(arglist);
 \end{verbatim}
diff --git a/Doc/ext/ext.tex b/Doc/ext/ext.tex
index 48cf0d1..3dc3c45 100644
--- a/Doc/ext/ext.tex
+++ b/Doc/ext/ext.tex
@@ -2,14 +2,7 @@
 
 \title{Extending and Embedding the Python Interpreter}
 
-\author{
-	Guido van Rossum \\
-	Dept. CST, CWI, P.O. Box 94079 \\
-	1090 GB Amsterdam, The Netherlands \\
-	E-mail: {\tt guido@cwi.nl}
-}
-
-\date{14 July 1994 \\ Release 1.0.3} % XXX update before release!
+\input{boilerplate}
 
 % Tell \index to actually write the .idx file
 \makeindex
@@ -20,6 +13,8 @@
 
 \maketitle
 
+\input{copyright}
+
 \begin{abstract}
 
 \noindent
@@ -427,7 +422,7 @@
     object *result;
     ...
     /* Time to call the callback */
-    arglist = mktuple(0);
+    arglist = newtupleobject(0);
     result = call_object(my_callback, arglist);
     DECREF(arglist);
 \end{verbatim}
diff --git a/Doc/lib.tex b/Doc/lib.tex
index 88ceffa..900cfac 100644
--- a/Doc/lib.tex
+++ b/Doc/lib.tex
@@ -2,14 +2,7 @@
 
 \title{Python Library Reference}
 
-\author{
-	Guido van Rossum \\
-	Dept. CST, CWI, P.O. Box 94079 \\
-	1090 GB Amsterdam, The Netherlands \\
-	E-mail: {\tt guido@cwi.nl}
-}
-
-\date{14 July 1994 \\ Release 1.0.3} % XXX update before release!
+\input{boilerplate}
 
 \makeindex			% tell \index to actually write the .idx file
 
@@ -20,6 +13,8 @@
 
 \maketitle
 
+\input{copyright}
+
 \begin{abstract}
 
 \noindent
diff --git a/Doc/lib/lib.tex b/Doc/lib/lib.tex
index 88ceffa..900cfac 100644
--- a/Doc/lib/lib.tex
+++ b/Doc/lib/lib.tex
@@ -2,14 +2,7 @@
 
 \title{Python Library Reference}
 
-\author{
-	Guido van Rossum \\
-	Dept. CST, CWI, P.O. Box 94079 \\
-	1090 GB Amsterdam, The Netherlands \\
-	E-mail: {\tt guido@cwi.nl}
-}
-
-\date{14 July 1994 \\ Release 1.0.3} % XXX update before release!
+\input{boilerplate}
 
 \makeindex			% tell \index to actually write the .idx file
 
@@ -20,6 +13,8 @@
 
 \maketitle
 
+\input{copyright}
+
 \begin{abstract}
 
 \noindent
diff --git a/Doc/lib/libsys.tex b/Doc/lib/libsys.tex
index cd2c646..e16fbd5 100644
--- a/Doc/lib/libsys.tex
+++ b/Doc/lib/libsys.tex
@@ -20,6 +20,15 @@
   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.
+
 \begin{datadesc}{exc_type}
 \dataline{exc_value}
 \dataline{exc_traceback}
diff --git a/Doc/libsys.tex b/Doc/libsys.tex
index cd2c646..e16fbd5 100644
--- a/Doc/libsys.tex
+++ b/Doc/libsys.tex
@@ -20,6 +20,15 @@
   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.
+
 \begin{datadesc}{exc_type}
 \dataline{exc_value}
 \dataline{exc_traceback}
diff --git a/Doc/ref.tex b/Doc/ref.tex
index 9fb37b6..a61c2de 100644
--- a/Doc/ref.tex
+++ b/Doc/ref.tex
@@ -2,14 +2,7 @@
 
 \title{Python Reference Manual}
 
-\author{
-	Guido van Rossum \\
-	Dept. CST, CWI, P.O. Box 94079 \\
-	1090 GB Amsterdam, The Netherlands \\
-	E-mail: {\tt guido@cwi.nl}
-}
-
-\date{14 July 1994 \\ Release 1.0.3} % XXX update before release!
+\input{boilerplate}
 
 % Tell \index to actually write the .idx file
 \makeindex
@@ -20,6 +13,8 @@
 
 \maketitle
 
+\input{copyright}
+
 \begin{abstract}
 
 \noindent
diff --git a/Doc/ref/ref.tex b/Doc/ref/ref.tex
index 9fb37b6..a61c2de 100644
--- a/Doc/ref/ref.tex
+++ b/Doc/ref/ref.tex
@@ -2,14 +2,7 @@
 
 \title{Python Reference Manual}
 
-\author{
-	Guido van Rossum \\
-	Dept. CST, CWI, P.O. Box 94079 \\
-	1090 GB Amsterdam, The Netherlands \\
-	E-mail: {\tt guido@cwi.nl}
-}
-
-\date{14 July 1994 \\ Release 1.0.3} % XXX update before release!
+\input{boilerplate}
 
 % Tell \index to actually write the .idx file
 \makeindex
@@ -20,6 +13,8 @@
 
 \maketitle
 
+\input{copyright}
+
 \begin{abstract}
 
 \noindent
diff --git a/Doc/texinputs/boilerplate.tex b/Doc/texinputs/boilerplate.tex
new file mode 100644
index 0000000..f8fc959
--- /dev/null
+++ b/Doc/texinputs/boilerplate.tex
@@ -0,0 +1,8 @@
+\author{
+	Guido van Rossum \\
+	Dept. CST, CWI, P.O. Box 94079 \\
+	1090 GB Amsterdam, The Netherlands \\
+	E-mail: {\tt guido@cwi.nl}
+}
+
+\date{6 Oct 1994 \\ Release 1.1} % XXX update before release!
diff --git a/Doc/texinputs/copyright.tex b/Doc/texinputs/copyright.tex
new file mode 100644
index 0000000..f445c40
--- /dev/null
+++ b/Doc/texinputs/copyright.tex
@@ -0,0 +1,22 @@
+Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
+Amsterdam, The Netherlands.
+
+\begin{center}
+All Rights Reserved
+\end{center}
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the names of Stichting Mathematisch
+Centrum or CWI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior permission.
+
+STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
+THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
+FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/Doc/tut.tex b/Doc/tut.tex
index 55ff36f..32ebc0e 100644
--- a/Doc/tut.tex
+++ b/Doc/tut.tex
@@ -1,15 +1,8 @@
 \documentstyle[twoside,11pt,myformat]{report}
 
 \title{Python Tutorial}
-        
-\author{
-        Guido van Rossum \\
-        Dept. CST, CWI, P.O. Box 94079 \\
-        1090 GB Amsterdam, The Netherlands \\
-        E-mail: {\tt guido@cwi.nl}
-}
 
-\date{14 July 1994 \\ Release 1.0.3} % XXX update before release!
+\input{boilerplate}
 
 \begin{document}
 
@@ -17,6 +10,8 @@
 
 \maketitle
 
+\input{copyright}
+
 \begin{abstract}
 
 \noindent
@@ -791,7 +786,7 @@
 
 \item
 The {\tt while} loop executes as long as the condition (here: {\tt b <
-100}) remains true.  In Python, like in C, any non-zero integer value is
+10}) remains true.  In Python, like in C, any non-zero integer value is
 true; zero is false.  The condition may also be a string or list value,
 in fact any sequence; anything with a non-zero length is true, empty
 sequences are false.  The test used in the example is a simple
@@ -813,7 +808,7 @@
 The {\tt print} statement writes the value of the expression(s) it is
 given.  It differs from just writing the expression you want to write
 (as we did earlier in the calculator examples) in the way it handles
-multiple expressions and strings.  Strings are written without quotes,
+multiple expressions and strings.  Strings are printed without quotes,
 and a space is inserted between items, so you can format things nicely,
 like this:
 
@@ -1007,7 +1002,7 @@
 \bcode\begin{verbatim}
 >>> def fib(n):    # write Fibonacci series up to n
 ...     a, b = 0, 1
-...     while b <= n:
+...     while b < n:
 ...           print b,
 ...           a, b = b, a+b
 ... 
@@ -1084,7 +1079,7 @@
 >>> def fib2(n): # return Fibonacci series up to n
 ...     result = []
 ...     a, b = 0, 1
-...     while b <= n:
+...     while b < n:
 ...           result.append(b)    # see below
 ...           a, b = b, a+b
 ...     return result
@@ -1359,7 +1354,7 @@
 have the same priority, which is lower than that of all numerical
 operators.
 
-Comparisons can be chained: e.g., {\tt a < b = c} tests whether {\tt a}
+Comparisons can be chained: e.g., {\tt a < b == c} tests whether {\tt a}
 is less than {\tt b} and moreover {\tt b} equals {\tt c}.
 
 Comparisons may be combined by the Boolean operators {\tt and} and {\tt
@@ -1460,14 +1455,14 @@
 
 def fib(n):    # write Fibonacci series up to n
     a, b = 0, 1
-    while b <= n:
+    while b < n:
           print b,
           a, b = b, a+b
 
 def fib2(n): # return Fibonacci series up to n
     result = []
     a, b = 0, 1
-    while b <= n:
+    while b < n:
           result.append(b)
           a, b = b, a+b
     return result
@@ -2101,7 +2096,7 @@
 built-in names (functions such as \verb\abs()\, and built-in exception
 names); the global names in a module; and the local names in a
 function invocation.  In a sense the set of attributes of an object
-also form a name space.  The important things to know about name
+also form a name space.  The important thing to know about name
 spaces is that there is absolutely no relation between names in
 different name spaces; for instance, two different modules may both
 define a function ``maximize'' without confusion --- users of the
@@ -2162,7 +2157,7 @@
 containing built-in names.
 
 Usually, the local scope references the local names of the (textually)
-current function.  Outside functions, the the local scope references
+current function.  Outside of functions, the the local scope references
 the same name space as the global scope: the module's name space.
 Class definitions place yet another name space in the local scope.
 
@@ -2643,7 +2638,7 @@
 thoroughly revised, several new features have been added to the
 language.  While ideally I should revise the tutorial to incorporate
 them in the mainline of the text, lack of time currently requires me
-to follow a more modest approach.  In this chapter I will briefly list the
+to take a more modest approach.  In this chapter I will briefly list the
 most important improvements to the language and how you can use them
 to your benefit.
 
@@ -2984,7 +2979,9 @@
 \section{Generalized Dictionaries}
 
 The keys of dictionaries are no longer restricted to strings -- they
-can be numbers, tuples, or (certain) class instances.  (Lists and
+can be
+any immutable basic type including strings,
+numbers, tuples, or (certain) class instances.  (Lists and
 dictionaries are not acceptable as dictionary keys, in order to avoid
 problems when the object used as a key is modified.)
 
@@ -3007,7 +3004,7 @@
 \section{Miscellaneous New Built-in Functions}
 
 The function \verb\vars()\ returns a dictionary containing the current
-local variables.  With a module as argument, it returns that module's
+local variables.  With a module argument, it returns that module's
 global variables.  The old function \verb\dir(x)\ returns
 \verb\vars(x).keys()\.
 
diff --git a/Doc/tut/tut.tex b/Doc/tut/tut.tex
index 55ff36f..32ebc0e 100644
--- a/Doc/tut/tut.tex
+++ b/Doc/tut/tut.tex
@@ -1,15 +1,8 @@
 \documentstyle[twoside,11pt,myformat]{report}
 
 \title{Python Tutorial}
-        
-\author{
-        Guido van Rossum \\
-        Dept. CST, CWI, P.O. Box 94079 \\
-        1090 GB Amsterdam, The Netherlands \\
-        E-mail: {\tt guido@cwi.nl}
-}
 
-\date{14 July 1994 \\ Release 1.0.3} % XXX update before release!
+\input{boilerplate}
 
 \begin{document}
 
@@ -17,6 +10,8 @@
 
 \maketitle
 
+\input{copyright}
+
 \begin{abstract}
 
 \noindent
@@ -791,7 +786,7 @@
 
 \item
 The {\tt while} loop executes as long as the condition (here: {\tt b <
-100}) remains true.  In Python, like in C, any non-zero integer value is
+10}) remains true.  In Python, like in C, any non-zero integer value is
 true; zero is false.  The condition may also be a string or list value,
 in fact any sequence; anything with a non-zero length is true, empty
 sequences are false.  The test used in the example is a simple
@@ -813,7 +808,7 @@
 The {\tt print} statement writes the value of the expression(s) it is
 given.  It differs from just writing the expression you want to write
 (as we did earlier in the calculator examples) in the way it handles
-multiple expressions and strings.  Strings are written without quotes,
+multiple expressions and strings.  Strings are printed without quotes,
 and a space is inserted between items, so you can format things nicely,
 like this:
 
@@ -1007,7 +1002,7 @@
 \bcode\begin{verbatim}
 >>> def fib(n):    # write Fibonacci series up to n
 ...     a, b = 0, 1
-...     while b <= n:
+...     while b < n:
 ...           print b,
 ...           a, b = b, a+b
 ... 
@@ -1084,7 +1079,7 @@
 >>> def fib2(n): # return Fibonacci series up to n
 ...     result = []
 ...     a, b = 0, 1
-...     while b <= n:
+...     while b < n:
 ...           result.append(b)    # see below
 ...           a, b = b, a+b
 ...     return result
@@ -1359,7 +1354,7 @@
 have the same priority, which is lower than that of all numerical
 operators.
 
-Comparisons can be chained: e.g., {\tt a < b = c} tests whether {\tt a}
+Comparisons can be chained: e.g., {\tt a < b == c} tests whether {\tt a}
 is less than {\tt b} and moreover {\tt b} equals {\tt c}.
 
 Comparisons may be combined by the Boolean operators {\tt and} and {\tt
@@ -1460,14 +1455,14 @@
 
 def fib(n):    # write Fibonacci series up to n
     a, b = 0, 1
-    while b <= n:
+    while b < n:
           print b,
           a, b = b, a+b
 
 def fib2(n): # return Fibonacci series up to n
     result = []
     a, b = 0, 1
-    while b <= n:
+    while b < n:
           result.append(b)
           a, b = b, a+b
     return result
@@ -2101,7 +2096,7 @@
 built-in names (functions such as \verb\abs()\, and built-in exception
 names); the global names in a module; and the local names in a
 function invocation.  In a sense the set of attributes of an object
-also form a name space.  The important things to know about name
+also form a name space.  The important thing to know about name
 spaces is that there is absolutely no relation between names in
 different name spaces; for instance, two different modules may both
 define a function ``maximize'' without confusion --- users of the
@@ -2162,7 +2157,7 @@
 containing built-in names.
 
 Usually, the local scope references the local names of the (textually)
-current function.  Outside functions, the the local scope references
+current function.  Outside of functions, the the local scope references
 the same name space as the global scope: the module's name space.
 Class definitions place yet another name space in the local scope.
 
@@ -2643,7 +2638,7 @@
 thoroughly revised, several new features have been added to the
 language.  While ideally I should revise the tutorial to incorporate
 them in the mainline of the text, lack of time currently requires me
-to follow a more modest approach.  In this chapter I will briefly list the
+to take a more modest approach.  In this chapter I will briefly list the
 most important improvements to the language and how you can use them
 to your benefit.
 
@@ -2984,7 +2979,9 @@
 \section{Generalized Dictionaries}
 
 The keys of dictionaries are no longer restricted to strings -- they
-can be numbers, tuples, or (certain) class instances.  (Lists and
+can be
+any immutable basic type including strings,
+numbers, tuples, or (certain) class instances.  (Lists and
 dictionaries are not acceptable as dictionary keys, in order to avoid
 problems when the object used as a key is modified.)
 
@@ -3007,7 +3004,7 @@
 \section{Miscellaneous New Built-in Functions}
 
 The function \verb\vars()\ returns a dictionary containing the current
-local variables.  With a module as argument, it returns that module's
+local variables.  With a module argument, it returns that module's
 global variables.  The old function \verb\dir(x)\ returns
 \verb\vars(x).keys()\.