Coba jelasin Lihat pula dari TeX dong

xdvi – Sebuah program untuk melihat berkas .dvi

.  The source code of the book in TeX (and a needed set of macros ) is available online on CTAN. It is provided only as an example and its use to prepare a book like The TeXbook is not allowed.

. The full source code of TeX; also available on CTAN. Being written using literate programming, it contains plenty of human-readable documentation.