1$if(titleblock)$ 2= $title$ 3$if(author)$ 4$for(author)$$author$$sep$; $endfor$ 5$endif$ 6$if(date)$ 7$date$ 8$endif$ 9$if(keywords)$ 10:keywords: $for(keywords)$$keywords$$sep$, $endfor$ 11$endif$ 12$if(lang)$ 13:lang: $lang$ 14$endif$ 15$if(toc)$ 16:toc: 17$endif$ 18$if(math)$ 19:stem: latexmath 20$endif$ 21 22$endif$ 23$if(abstract)$ 24[abstract] 25== Abstract 26$abstract$ 27 28$endif$ 29$for(header-includes)$ 30$header-includes$ 31 32$endfor$ 33$for(include-before)$ 34$include-before$ 35 36$endfor$ 37$body$ 38$for(include-after)$ 39 40$include-after$ 41$endfor$ 42