diff --git a/MMVII/Doc/Generalities/Intro.tex b/MMVII/Doc/Generalities/Intro.tex
index d6d036b0e0..9e6eccfe35 100755
--- a/MMVII/Doc/Generalities/Intro.tex
+++ b/MMVII/Doc/Generalities/Intro.tex
@@ -14,7 +14,7 @@ \chapter{My first command : set editing}
 
 \section{Introduction}
 
-This chapter presents the first commands of \PPP . It uses a plan that will be almost
+This chapter presents the first commands of \PPP\ . It uses a plan that will be almost
 systematic in many other chapter :
 
 \begin{itemize}
@@ -43,7 +43,7 @@ \section{Introduction}
 \section{Algorithms/Photogrammetry}
 
 This command is useful for editing a set of files.
-Almost all commands of \PPP require as parameter one or more set of 
+Almost all commands of \PPP\ require as parameter one or more set of 
 file (i.e. the subset of images that we are considering for a given computation).
 For single case, this set of file can be simply specified by a regular expression :
 for example {\tt ".*JPG"} to specify all the file with a {\tt JPG} extension.
@@ -316,7 +316,7 @@ \subsubsection{{\tt Show} paramater}
 
 \subsection{More help}
 
-In \PPP there exists many optional parameter. There are not shown by default in the help mode,
+In \PPP\ there exists many optional parameter. There are not shown by default in the help mode,
 but it is possible to show :
 
 \begin{itemize}
@@ -324,9 +324,9 @@ \subsection{More help}
 
    \item  all the common parameter, including the \emph{internal} common parameter
           by setting {\tt HELP} instead of {\tt help}; the internal parameter are used
-          by \PPP to communicate information to sub-process  when  \PPP  calls itself;
-          for example the parameter {\tt LevCall} allow \PPP to know if it was called
-          by the user or by \PPP and to which level of imbrication; obviously it is generally
+          by \PPP\ to communicate information to sub-process  when  \PPP\  calls itself;
+          for example the parameter {\tt LevCall} allow \PPP\ to know if it was called
+          by the user or by \PPP\ and to which level of imbrication; obviously it is generally
           a bad idea to fix yourself the internall parameter;
 \end{itemize}
 
@@ -509,7 +509,7 @@ \subsection{Predefined semantics}
 
 \subsubsection{Generalities}
 
-Many parameters of many command of \PPP correspond to the same meaning/semantic,
+Many parameters of many command of \PPP\ correspond to the same meaning/semantic,
 this is  the case for "main set of images", "main orientation", \dots These predefined
 semantic are indicated in square bracket after the types, for example with command
 {\tt EditSet} we can see {\tt [FDP], [MPI0], [FFI0],[FFI1] [DP]} :
@@ -573,7 +573,7 @@ \subsection{Generality}
 The first part of the message contains the type of error, it can be :
 
 \begin{itemize}
-   \item {\tt Level=[Internal Error]} : this mean that some incoherence in \PPP was encontered,
+   \item {\tt Level=[Internal Error]} : this mean that some incoherence in \PPP\ was encontered,
          probably in this case user cannot do many thing but report to forum or devlopping team
          mentionning the complete message;
 
@@ -644,7 +644,7 @@ \subsection{Error {\tt MultOptP}}
 \subsection{Error {\tt OpenFile}}
 \index{OpenFile}
 
-This error occurs when \PPP cannot open a file, in read or write mode, several reason can exist :
+This error occurs when \PPP\ cannot open a file, in read or write mode, several reason can exist :
 hard disk full, rights on the file system, directory do not exist. Example :
 
 \begin{verbatim}