To help people understand the project, the team created a poster.
left-column.tex and middle-column.tex and right-column.tex
contain the content in the left, middle, and right column,
respectively. poster.tex is the master file.
The qrcode points to https://doenet.org/ and is generated by the
Makefile using qrencode (to produce an svg) and inkscape (to convert
said svg to a pdf that LaTeX can include).