anchor.diff:      \begin{center}
       \begin{spacing}{<%= @title_line_spacing %>}
       <%= @polyglossia_default_language ? '' : '\titlefont' %>
  -    \fontsize{16\RtRelPt}{19.2\RtRelPt}
  +    \fontsize{16\RtRelPt}{19.2\RtRelPt}\selectfont
     }
     {
       \end{spacing}
  
positive.code:     \vspace*{\fill}
      \begin{center}
      <%= @polyglossia_default_language ? '' : '\titlefont' %>
      \fontsize{10\RtRelPt}{12\RtRelPt}
    }
    {\end{center}}
  % environment to render idtitle2 paragraphs
  
negative.code:     \par
      \begin{center}
      <%= @polyglossia_default_language ? '' : '\titlefont' %>
      \fontsize{8\RtRelPt}{9.6\RtRelPt}\selectfont
    }
    {\par\end{center}}
  % environment to render meta info
  \newenvironment{RtMetaInfo}
    {
      \par
      \fontsize{8\RtRelPt}{9.6\RtRelPt}\selectfont
    }
    {\par}
  % environment to render .normal
  \newenvironment{RtNormal}
    {
      \fontsize{<%= @font_size %>\RtRelPt}{<%= @font_leading %>\RtRelPt}\selectfont
    }
    {}
  % environment to render .normal_pn
  \newenvironment{RtNormalPn}
    {
      \fontsize{<%= @font_size %>\RtRelPt}{<%= @font_leading %>\RtRelPt}\selectfont
    }
    {}
  % environment to render translator omit in green
  \newenvironment{RtOmit}
  