Dak n. : Post; mail; also, the mail or postal arrangements; -- spelt also dawk, and dauk.

Example:
How can I find operating manual for Dak Turbo Baker IV?

Taxonomy
DAK, DAK Industries, products, dak catalog, MP3s, music, Kaplan, catalogs, Now DAK, greets, Tracks, Cassette, Over the years, engineers, ALL New, industries inc, LPs, Wireless Mics.

Defination from the web:
DAK Industries: Drew Kaplan greets past DAKonians at DAK! ... By 1994, DAK 1 was 4,300,000 strong. If you remember the DAK catalog, you know that I tested every product myself and wrote the stories about the products, describing their benefits and the faults. ...