LATEX EXAMPLES
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https://gitlab.com/chch/memo/blob/master/E/151208_btsw.sty
https://gitlab.com/chch/memo/blob/master/E/151007_howix.sty


LATEX LAYOUT
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/home/pi/images/saturday/latex-left.png
/home/pi/images/saturday/latex-right.png


LATEX CHEAT SHEET
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http://etherbox.local/home/pi/documents/latexsheet-a4.pdf


PREPROCESSING
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# sed -i '/<a /!s,\([>]*\)\(http.\?://[^ <]*\)\(\b\),\1<a href="\2" class="linkify">\2</a>\3,g' x.html
  sed -i '/<htt/!s,\(http.\?://[^ <]*\)\(\b\),\<\1>\2,g' x.md