• count1to, make use of fixed TeX counters;
• everysel, set commands to execute every time a font is selected;
• everyshi, set commands to execute whenever a page is shipped out;
• multitoc, typeset the table of contents in multiple columns;
• prelim2e, mark typeset pages as preliminary; and
• ragged2e, typeset ragged text and allow hyphenation.

The author is Martin Schröder.