__<P>__
__<SP>__
__<P>__
__<SP>__
__<P>__
__<SP>__
Please consult the official guide to bookdown: https://bookdown.org/yihui/bookdown
__<P>__
__<SP>__
__<P>__
__<SP>__
__<P>__
__<SP>__
Please consult the official guide to bookdown: https://bookdown.org/yihui/bookdown