The package supports typesetting documents whose counters are represented in base twelve, also called dozenal. It includes a macro for converting positive whole numbers to dozenal from decimal (base ten) representation. The package also includes a few other macros and redefines all the standard counters to produce dozenal output. Fonts, in Roman, italic, slanted, and boldface versions, provide ten and eleven. The fonts were designed to blend well with the Computer Modern fonts, and are available both as Metafont source and in Adobe Type 1 format.