I have added a "boxed x" and "CHECK MARK" to my document, but
they do not get exported to pdf output. They are in the .tex
file, and do go through to the HTML. So far I'm using these
packages
#+LaTeX_HEADER: \usepackage[T1]{fontenc}
#+LaTeX_HEADER: \usepackage{libertine}
#+LaTeX_HEADER: \usepackage[margin=0.80in]{geometry}
#+LaTeX_HEADER: \usepackage{setspace}
#+LaTeX_HEADER: \usepackage{enumitem}
#+LaTeX_HEADER: \usepackage{endnotes}
(Bonus points for UTF8 code for the opposite of "CHECK MARK"?)