diff --git a/Doc/myformat.sty b/Doc/myformat.sty
index ee80649e601..728ccb49553 100644
--- a/Doc/myformat.sty
+++ b/Doc/myformat.sty
@@ -1,17 +1,11 @@
 % Style parameters and macros used by some documents here
 
-% Style parameters
-\raggedbottom
-\sloppy
-\parindent =       0mm
-\parskip =         2mm
-
-% Page style parameters for A4 (European standard paper size)
+% Page format parameters for A4 (European standard paper size)
 %\textwidth =      160mm
 %\textheight =     240mm
 %\topmargin =      -11mm
 
-% Page style parameters for U.S. standard paper size
+% Page format parameters for U.S. standard paper size
 \textwidth =      160mm
 \textheight =     220mm
 \topmargin =      -11mm
@@ -19,12 +13,19 @@
 \oddsidemargin =   1.5mm
 \evensidemargin =  1.5mm
 
+% Style parameters
+\raggedbottom
+\sloppy
+\parindent =       0mm
+\parskip =         2mm
+
 % Frequently used system name
 \newcommand{\UNIX}{U{\sc nix}}
 
 % Variable used by begin code command
 \newlength{\codewidth}
 
+% Command to start a code block (follow this by \begin{verbatim})
 \newcommand{\bcode}{
 	% Calculate the text width for the minipage:
 	\setlength{\codewidth}{\linewidth}
@@ -36,9 +37,87 @@
 	\begin{minipage}[t]{\codewidth}
 }
 
+% Command to end a code block (precede this by \end{verbatim})
 \newcommand{\ecode}{
 	\end{minipage}
 	\vspace{3mm}
 	\par
 	\noindent
 }
+
+% Underscores are not magic throughout the Python documentation
+\catcode`_=12
+
+% Dummy \cbstart and \cbend so I can leave changebars in...
+\newcommand{\cbstart}{}
+\newcommand{\cbend}{}
+
+% Define \itembreak: force the text after an item to start on a new line
+\newcommand{\itembreak}{
+\mbox{}
+\\*[0mm]
+}
+
+% Command to generate two index entries (using subentries)
+\newcommand{\indexii}[2]{
+\index{#1!#2}
+\index{#2!#1}
+}
+
+% And three entries (using only one level of subentries)
+\newcommand{\indexiii}[3]{
+\index{#1!#2 #3}
+\index{#2!#3, #1}
+\index{#3!#1 #2}
+}
+
+% And four (again, using only one level of subentries)
+\newcommand{\indexiv}[4]{
+\index{#1!#2 #3 #4}
+\index{#2!#3 #4, #1}
+\index{#3!#4, #1 #2}
+\index{#4!#1 #2 #3}
+}
+
+% Command to generate a reference to a function, statement, keyword, operator
+\newcommand{\stindex}[1]{\indexii{statement}{#1@{\tt#1}}}
+\newcommand{\kwindex}[1]{\indexii{keyword}{#1@{\tt#1}}}
+\newcommand{\opindex}[1]{\indexii{operator}{#1@{\tt#1}}}
+\newcommand{\bifuncindex}[1]{\index{#1@{\tt#1} (built-in function)}}
+
+% Add an index entry for a module
+\newcommand{\modindex}[2]{\index{#1@{\tt#1} (#2module)}}
+\newcommand{\bimodindex}[1]{\modindex{#1}{built-in }}
+\newcommand{\stmodindex}[1]{\modindex{#1}{standard }}
+
+% Additional string for an index entry
+\newcommand{\indexsubitem}{}
+\newcommand{\ttindex}[1]{\index{#1@{\tt#1} \indexsubitem}}
+
+% Define \itemjoin: some negative vspace to join two items together
+\newcommand{\itemjoin}{
+\mbox{}
+\vspace{-\itemsep}
+\vspace{-\parsep}
+}
+
+% Define \funcitem{func}{args}: define a function item
+\newcommand{\funcitem}[2]{
+\ttindex{#1}
+\item[{\tt #1(#2)}]
+\ 
+}
+
+% Define \dataitem{name}: define a data item
+\newcommand{\dataitem}[1]{
+\ttindex{#1}
+\item[{\tt #1}]
+\ 
+}
+
+% Define \excitem{name}: define an exception item
+\newcommand{\excitem}[1]{
+\ttindex{#1}
+\item[{\tt #1}]
+\itembreak
+}