The Manuel de Codage (French: [manɥɛl də kɔdaʒ]), abbreviated MdC, is a standard system for the computer-encoding of Egyptian hieroglyphic texts.
The resulting Manual for the Encoding of Hieroglyphic Texts for Computer-input (Jan Buurman, Nicolas Grimal, Jochen Hallof, Michael Hainsworth and Dirk van der Plas, Informatique et Egyptologie 2, Paris 1988) is generally shortened to Manuel de Codage.
The encoding system of the Manuel de Codage has since been adopted by international Egyptology as the official common standard for registering hieroglyphic texts on the computer.
Egyptologists have scheduled a revision for 2007 of the Manuel de Codage, in order to ensure broader implementation in current and future software.
This system is used (though frequently with modifications) by various software packages developed for typesetting hieroglyphic texts (such as SignWriter, WinGlyph, MacScribe, InScribe, Glyphotext, WikiHiero, and others).