anchor.diff:  \newenvironment{RtSubTitle}
     {%
       \begin{center}
  -      \titlefont%
  +      <%= @polyglossia_default_language ? '' : '\titlefont' %>%
         \fontsize{10pt}{10.5pt}\selectfont
     }
     {%
  
positive.code:     \setlength{\parindent}{0pt}
      \setLR
      \centering
      \idtitlefont%
      \fontsize{8pt}{10.5pt}\selectfont
    }
    {%
  
negative.code:       \vspace*{8.5pt}%
        \setlength{\parskip}{0pt}
        \setlength{\parindent}{0pt}
        <%= @polyglossia_default_language ? '' : '\titlefont' %>%
        \fontsize{8pt}{10.5pt}\selectfont
        <%= @id_write_to_secondary %>
        \raggedright
  