6.3 book

<..configure html4 book..>
 <.article,report,book options 1, 2, 3.>
 \:CheckOption{1}     \if:Option
    <.toc book options 1.>
 \fi
 <.config book-report-article.>
 <.latex shared part config.>
 <.config book-report 4.0t.>
 <.32,4 report,book.>
 <.32,4 book.>
 % \:CheckOption{2} \if:Option
 % \else
 %    \:CheckOption{3} \if:Option \else
 %       \:CheckOption{4} \if:Option \else
 %          \:CheckOption{5} \if:Option \else
 %             \:CheckOption{6} \if:Option \else
 %                \:CheckOption{7} \if:Option \else
 %                \fi
 %             \fi
 %          \fi
 %       \fi
 %    \fi
 %    \if:Option
 %        \Css{.sectionToc,       .likesectionToc       {margin-left:2em;}}
 %        \Css{.subsectionToc,    .likesubsectionToc    {margin-left:4em;}}
 %        \Css{.subsubsectionToc, .likesubsubsectionToc {margin-left:6em;}}
 %    \fi
 % \fi
 <.book: css.>
-_-_-

<..book: css..>
 \Css{
 .chapterToc,
 .likechapterToc
                                          {margin-left:0em;}}
 \Css{
 .chapterToc     \string~ .likesectionToc,
 .chapterToc     \string~ .sectionToc,
 .likechapterToc \string~ .likesectionToc,
 .likechapterToc \string~ .sectionToc
                                          {margin-left:2em;}}
 \Css{
 .chapterToc     \string~ .likesectionToc \string~ .likesubsectionToc,
 .chapterToc     \string~ .likesectionToc \string~ .subsectionToc,
 .chapterToc     \string~ .sectionToc     \string~ .likesubsectionToc,
 .chapterToc     \string~ .sectionToc     \string~ .subsectionToc,
 .likechapterToc \string~ .likesectionToc \string~ .likesubsectionToc,
 .likechapterToc \string~ .likesectionToc \string~ .subsectionToc,
 .likechapterToc \string~ .sectionToc     \string~ .likesubsectionToc,
 .likechapterToc \string~ .sectionToc     \string~ .subsectionToc
                                          {margin-left:4em;}}
 \Css{.chapterToc     \string~ .likesectionToc \string~ .likesubsectionToc \string~ .likesubsubsectionToc,
 .chapterToc     \string~ .likesectionToc \string~ .likesubsectionToc \string~ .subsubsectionToc,
 .chapterToc     \string~ .likesectionToc \string~ .subsectionToc     \string~ .likesubsubsectionToc,
 .chapterToc     \string~ .likesectionToc \string~ .subsectionToc     \string~ .subsubsectionToc,
 .chapterToc     \string~ .sectionToc     \string~ .likesubsectionToc \string~ .likesubsubsectionToc,
 .chapterToc     \string~ .sectionToc     \string~ .likesubsectionToc \string~ .subsubsectionToc,
 .chapterToc     \string~ .sectionToc     \string~ .subsectionToc     \string~ .likesubsubsectionToc,
 .chapterToc     \string~ .sectionToc     \string~ .subsectionToc     \string~ .subsubsectionToc,
 .likechapterToc \string~ .likesectionToc \string~ .likesubsectionToc \string~ .likesubsubsectionToc,
 .likechapterToc \string~ .likesectionToc \string~ .likesubsectionToc \string~ .subsubsectionToc,
 .likechapterToc \string~ .likesectionToc \string~ .subsectionToc     \string~ .likesubsubsectionToc,
 .likechapterToc \string~ .likesectionToc \string~ .subsectionToc     \string~ .subsubsectionToc,
 .likechapterToc \string~ .sectionToc     \string~ .likesubsectionToc \string~ .likesubsubsectionToc,
 .likechapterToc \string~ .sectionToc     \string~ .likesubsectionToc \string~ .subsubsectionToc,
 .likechapterToc \string~ .sectionToc     \string~ .subsectionToc     \string~ .likesubsubsectionToc
 .likechapterToc \string~ .sectionToc     \string~ .subsectionToc     \string~ .subsubsectionToc
                                          {margin-left:6em;}}
 
 \Css{
 .likesectionToc ,
 .sectionToc
                                          {margin-left:0em;}}
 \Css{
 .likesectionToc \string~ .likesubsectionToc,
 .likesectionToc \string~ .subsectionToc,
 .sectionToc     \string~ .likesubsectionToc,
 .sectionToc     \string~ .subsectionToc
                                          {margin-left:2em;}}
 \Css{.likesectionToc \string~ .likesubsectionToc \string~ .likesubsubsectionToc,
 .likesectionToc \string~ .likesubsectionToc \string~ .subsubsectionToc,
 .likesectionToc \string~ .subsectionToc     \string~ .likesubsubsectionToc,
 .likesectionToc \string~ .subsectionToc     \string~ .subsubsectionToc,
 .sectionToc     \string~ .likesubsectionToc \string~ .likesubsubsectionToc,
 .sectionToc     \string~ .likesubsectionToc \string~ .subsubsectionToc,
 .sectionToc     \string~ .subsectionToc     \string~ .likesubsubsectionToc,
 .sectionToc     \string~ .subsectionToc     \string~ .subsubsectionToc
                                          {margin-left:4em;}}
 \Css{
 .likesubsectionToc,
 .subsectionToc
                                          {margin-left:0em;}}
 \Css{
 .likesubsectionToc \string~ .subsubsectionToc,
 .subsectionToc     \string~ .subsubsectionToc,
                                          {margin-left:2em;}}
-_-_-

<..32,4 book..>
 \ConfigureMark{chapter}
    {\if@mainmatter \ifnum \c@secnumdepth >\m@ne
        \HCode{<span class="titlemark">}\chaptername
      \ \thechapter\HCode{</span>}\fi \fi}
 \Configure{chapterTITLE+}{\if@mainmatter\thechapter\space\fi#1}
 \renewcommand\thechapter {\if@mainmatter\@arabic\c@chapter\fi}
-_-_-

<..32,4 book..>+
 \Configure{chapter}{}{}
    {\IgnorePar\EndP\HCode{<h2 class="chapterHead"\a:LRdir>}%
     \if@mainmatter \TitleMark{\HCode{<br />}}\fi }
    {\HCode{</h2>}\IgnoreIndent}
 \Configure{appendix}{}{}
    {\IgnorePar\EndP\HCode{<h2 class="appendixHead"\a:LRdir>}%
     \if@mainmatter \TitleMark{\HCode{<br />}}\fi }
    {\HCode{</h2>}\IgnoreIndent}
 \Configure{likechapter}{}{}
    {\IgnorePar\EndP\HCode{<h2 class="likechapterHead"\a:LRdir>}}
    {\HCode{</h2>}\IgnoreIndent}
-_-_-

<..chapter toc css..>
 \Css{.chapterToc a, .chapterToc, .likechapterToc a, .likechapterToc,
         .appendixToc a, .appendixToc
         {line-height: 200\%; font-weight:bold;}}
-_-_-

<..part toc css..>
 \Css{.partToc a, .partToc, .likepartToc a, .likepartToc
         {line-height: 200\%; font-weight:bold; font-size:110\%;}}
-_-_-