diff --git a/README b/README
index 93c2a94..46fd39f 100644
--- a/README
+++ b/README
@@ -1,7 +1,7 @@
 % * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 % Sa-TikZ: TikZ library to draw switching architectures
 %
-% Version v0.7 2014/1/21 - (C) Claudio Fiandrino
+% Version v0.7a 2014/1/29 - (C) Claudio Fiandrino
 % 
 % E-mail: claudio dot fiandrino at gmail dot com
 %
diff --git a/doc/sa-tikz-doc.pdf b/doc/sa-tikz-doc.pdf
index 6d28614..2c841d9 100644
Binary files a/doc/sa-tikz-doc.pdf and b/doc/sa-tikz-doc.pdf differ
diff --git a/doc/sa-tikz-doc.tex b/doc/sa-tikz-doc.tex
index 4e8d4d7..3bc3365 100644
--- a/doc/sa-tikz-doc.tex
+++ b/doc/sa-tikz-doc.tex
@@ -51,8 +51,8 @@ \section*{Index}\addcontentsline{toc}{section}{Index}
     /pdflinks/show labels=false,
 }
 \makeindex
-\newcommand{\version}{0.7}
-\newcommand{\versiondate}{January 21, 2014}
+\newcommand{\version}{0.7a}
+\newcommand{\versiondate}{January 29, 2014}
 
 \title{\saTikZ\footnote{This package has version number \textit{v}\version\ of \versiondate; it is released under and subject to the \href{http://www.latex-project.org/lppl/}{\LaTeX\ Project Public License (LPPL)}.}}
 \author{Claudio Fiandrino \\ \small\href{mailto:claudio.fiandrino@gmail.com}{\texttt{claudio.fiandrino@gmail.com}}}
@@ -80,7 +80,7 @@ \section*{Introduction}
 \end{flushleft}
 In both cases the auxiliary \Tikz\ libraries \bgroup\color{red!75!black}\verb|calc|\egroup{}, \bgroup\color{red!75!black}\verb|decorations.pathreplacing|\egroup\ and \bgroup\color{red!75!black}\verb|positioning|\egroup\ are automatically loaded; in the latter case also the \Tikz\ package is loaded.
 
-The version \textit{v}\version\ is compliant with \Tikz\ 3.0.0 and provides a way to draw Clos Networks Strictly-non-Blocking (snb) and Rearrangeable (rear), Benes Networks and Banyan Networks (in particular Omega\footnote{Implementation of Omega Networks by João Gabriel Reis.} and Flip Networks); moreover, the package provides the possibility to fully customize the aspect of the drawn network: the dimensions of module, their distance and the font used are some examples. Finally, \saTikZ\ let users to draw connections among the stages by accessing the single ports of the modules.
+The version \textit{v}\version\ is compliant with \Tikz\ 3.0.0\footnote{In order to compile the documentation, and only for this scope, \Tikz\ 3.0.0 is \emph{mandatory}.} and provides a way to draw Clos Networks Strictly-non-Blocking (snb) and Rearrangeable (rear), Benes Networks and Banyan Networks (in particular Omega\footnote{Implementation of Omega Networks by João Gabriel Reis.} and Flip Networks); moreover, the package provides the possibility to fully customize the aspect of the drawn network: the dimensions of module, their distance and the font used are some examples. Finally, \saTikZ\ let users to draw connections among the stages by accessing the single ports of the modules.
 
 \section{Basic usage}
 The simplest use of the package is to define a 
@@ -380,7 +380,7 @@ \subsection{Output customization}
 \end{tikzpicture}
 \end{codeexample}
 
-Consider the following $16 \times 16$ Omega Network:
+The following example is a $16 \times 16$ Omega Network.
 \begin{codeexample}[]
 \tikzset{module size=0.6cm,pin length factor=0.6,
          module ysep=0.65, module xsep=3.5,}
@@ -689,7 +689,7 @@ \section{Architectures for didactic purposes}
 \end{tikzpicture}
 \end{codeexample}
 
-To have automatically all labels in math mode, use:
+To have automatically all the labels in math mode, you can use:
 \begin{key}{/tikz/set math mode labels=\mchoice{true,false} (default false)}
 	This option is normally disabled |set math mode labels/.default=false|; to ensure labels be set completely in math mode is sufficient set |set math mode labels=true| before the type of the network.
 \end{key}
@@ -732,7 +732,7 @@ \section{Architectures for didactic purposes}
 \clearpage
 \appendix
 
-\section{Benes complete internal connections algorithm}
+\section{Algorithm for drawing connections in Benes Networks}
 \label{sec:benesconnalg}
 To explain how the connections of the |benes complete| networks are drawn, the following reference example will be considered:
 \begin{center}
diff --git a/sa-tikz.sty b/sa-tikz.sty
index bb4d198..b28ff20 100644
--- a/sa-tikz.sty
+++ b/sa-tikz.sty
@@ -1,10 +1,10 @@
 % * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 % 
-% Sa-TikZ package v0.7 * * (C) Claudio Fiandrino 2012-2014
+% Sa-TikZ package v0.7a * * (C) Claudio Fiandrino 2012-2014
 % 
 % * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{sa-tikz}[2014/1/21 v0.7 Switching architectures design library.]
+\ProvidesPackage{sa-tikz}[2014/1/29 v0.7a Switching architectures design library.]
 \RequirePackage{tikz}
 \usetikzlibrary{backgrounds,calc,positioning,decorations.pathreplacing}
 
@@ -12,6 +12,24 @@
 % UTILITY
 % * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 
+% PGFMATHISODD: 1 = true, 0 = false
+% from TikZ 3.0.0
+% Test for checking whether \pgfmathisodd is defined or not
+% for compatibility with TikZ 2.10
+%
+\@ifundefined{pgfmathisodd}{
+\pgfmathdeclarefunction{isodd}{1}{%
+  \begingroup
+    \pgfmathsetcount\c@pgfmath@counta{abs(int(#1))}%
+    \ifodd\c@pgfmath@counta
+      \def\pgfmathresult{1}%
+    \else
+      \def\pgfmathresult{0}%
+    \fi
+    \pgfmath@smuggleone\pgfmathresult
+  \endgroup}
+}{}
+
 % PGFMATHOMEGAROTATION:
 %
 % #1: number to be rotated
diff --git a/tikzlibraryswitching-architectures.code.tex b/tikzlibraryswitching-architectures.code.tex
index 6b43518..8e16242 100644
--- a/tikzlibraryswitching-architectures.code.tex
+++ b/tikzlibraryswitching-architectures.code.tex
@@ -1,6 +1,6 @@
 % * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 % 
-% Sa-TikZ package v0.7 * * (C) Claudio Fiandrino 2012-2014
+% Sa-TikZ package v0.7a * * (C) Claudio Fiandrino 2012-2014
 % 
 % * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 
@@ -14,6 +14,24 @@
 % UTILITY
 % * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 
+% PGFMATHISODD: 1 = true, 0 = false
+% from TikZ 3.0.0
+% Test for checking whether \pgfmathisodd is defined or not
+% for compatibility with TikZ 2.10
+%
+\@ifundefined{pgfmathisodd}{
+\pgfmathdeclarefunction{isodd}{1}{%
+  \begingroup
+    \pgfmathsetcount\c@pgfmath@counta{abs(int(#1))}%
+    \ifodd\c@pgfmath@counta
+      \def\pgfmathresult{1}%
+    \else
+      \def\pgfmathresult{0}%
+    \fi
+    \pgfmath@smuggleone\pgfmathresult
+  \endgroup}
+}{}
+
 % PGFMATHOMEGAROTATION:
 %
 % #1: number to be rotated