Markus Kohm
Grid, a.k.a. in-register, setting
Typeset EAN barcodes using TeX rules, only
Examples from the KOMA-Script book
A bundle of versatile classes and packages
Create index using lualatex
Notes in the margin, even where \marginpar fails
Provide LaTeX 3 commands for typesetting rules,
Unlimited number of indexes
Set page margins
LaTeX support of a priest’s work