message: cleanup manual
diff: @@ -30,8 +30,7 @@ valid dump file defining a single scalar variable \code{y} with value
  %
  \begin{quote}
  \begin{Verbatim}
  -y <-
  -17.2
  +y <- 17.2
  \end{Verbatim}
  \end{quote}
  %
  @@ -255,8 +254,7 @@ The following dump file declares an integer value for \code{y}.
  %
  \begin{quote}
  \begin{Verbatim}
  -y <-
  -2
  +y <- 2
  \end{Verbatim}
  \end{quote}
  %
  @@ -270,8 +268,7 @@ explicit, is equivalent to the above.
  %
  \begin{quote}
  \begin{Verbatim}
  -y <-
  -2L
  +y <- 2L
  \end{Verbatim}
  \end{quote}
  @@ -279,8 +276,7 @@ The following dump file provides a real value for \code{y}.
  %
  \begin{quote}
  \begin{Verbatim}
  -y <-
  -2.0
  +y <- 2.0
  \end{Verbatim}
  \end{quote}
  %
  @@ -329,8 +325,7 @@ For instance, the following definition is legal in a dump file.
  %
  \begin{quote}
  \begin{Verbatim}
  -"y" <-
  -c(1,2,3)
  +"y" <- c(1,2,3)
  \end{Verbatim}
  \end{quote}
  @@ -387,7 +382,7 @@ by the following (mildly templated) Backus-Naur form grammar.
  \begin{verbatim}
  definitions ::= definition+
  - definition ::= name ("<-" | '=') value optional_semicolon
  + definition ::= name <- value optional_semicolon
  name ::= char*
  | ''' char* '''
  