anchor.diff:    {\end{minipage}}
   % environment to render stanza paragraphs.
   \newenvironment{RtStanza}
  - {\par\leftskip=60\RtRelPt \rightskip=30\RtRelPt \setlength{\parindent}{-8\RtRelPt}}
  + {\par\leftskip=60\RtRelPt \rightskip=30\RtRelPt \setlength{\parindent}{-8\RtRelPt}\fontsize{<%= @font_size %>\RtRelPt}{<%= @font_leading %>\RtRelPt}}
    {\par}
   % environment to render ### header
   \newenvironment{RtSubTitle}
  -  {\begin{center}<%= @polyglossia_default_language ? '' : '\titlefont' %>\relscale{1.5}}
  +  {\begin{center}<%= @polyglossia_default_language ? '' : '\titlefont' %>\fontsize{10\RtRelPt}{10.5\RtRelPt}}
     {\end{center}}
   % environment to render # header
   \newenvironment{RtTitle}
     {
       \begin{center}
       <%= @polyglossia_default_language ? '' : '\titlefont' %>
  -    \relscale{2}
  -    \begin{spacing}{3}
  +    \fontsize{22\RtRelPt}{26.4\RtRelPt}
     }
     {
       \end{spacing}
  
positive.code:   {}
  % environment to render questions
  \newenvironment{RtQuestion}
    {\par\noindent\hangindent=25\RtRelPt\hangafter=1}
    {\par}
  % environment to render scr paragraphs
  \newenvironment{RtScr}
   {\par\leftskip=20\RtRelPt \rightskip=20\RtRelPt \setlength{\parindent}{8\RtRelPt}}
   {\par}
  % environment to render song paragraphs.
  \newenvironment{RtSong}
   {\par\leftskip=60\RtRelPt \rightskip=30\RtRelPt \setlength{\parindent}{-8\RtRelPt} \nopagebreak \setlength{\parskip}{0pt plus 0pt minus 0pt}}
   {\par}
  % environment to render split pairs in pdf_recording_merged
  \newenvironment{RtSplitPair}
  
negative.code:   {\par\end{center}}
  % environment to render meta info
  \newenvironment{RtMetaInfo}
    {\par\fontsize{8\RtRelPt}{9.6\RtRelPt}}
    {\par}
  % environment to render .normal
  \newenvironment{RtNormal}
    {\fontsize{<%= @font_size %>\RtRelPt}{<%= @font_leading %>\RtRelPt}}
    {}
  % environment to render .normal_pn
  \newenvironment{RtNormalPn}
    {\fontsize{<%= @font_size %>\RtRelPt}{<%= @font_leading %>\RtRelPt}}
    {}
  % environment to render translator omit in green
  \newenvironment{RtOmit}
  