Modularize some of HTML page construction
HTML page wrapping to a match template
Improved setting filename of HTML pages
Previous, Next buttons for HTML
Reworked LaTeX geometry package options
Condition on closing block in letters
Adjust default page margins for letters
Fine-tune spacing in LaTeX output
Fine-tune hard line breaks
Equation cross-referencing, HTML, LaTeX
Semantic LaTeX terminology macro, preamble cleanup
All reserved characters from TeX
Fix cross-referencing for exercises
Change up LaTeX peresentation for solutions