Make the preface and the content readable using indent
Make the preface readable using square
Fix indent (inside of a list)
replace unevaluated_operand with unevaluated operand
Fix pre (copyright)
Fix typo (double-byte single-quote)
fix typos
fix sample code
Fix Fontboosting (mobile)
Enable to wrap pre (global)
Add period
Add highlightjs for header
Fix css (workaround for pre)
Turn on syntax highlighting (monokai_sublime)
fix typos