bookdownplus            Create demo files for building books with R
                        bookdown package.
mail_bodysize           Available fontsize for mail body
mail_font               Available fonts for mail body
mail_fontsize           Available fontsize for mail template
mail_style              Available styles for mail template
mail_theme              Available themes for mail template
more_output             Available output formats besides pdf_book
poster_theme            Available themes for poster templatemail body
template                Available templates
