OpenType Specification v.1.4

This specification details the format of OpenType fonts, the TrueType and CFF
outline formats, and the TrueType hinting language. This specification has been
developed jointly by Adobe and Microsoft. Because OpenType is an extension of
TrueType, portions are also developed jointly by Adobe, Microsoft, and Apple.

Many references to both TrueType and PostScript exist throughout this document,
as OpenType fonts combine the two technologies.

If you have comments or suggestions about this document, please send mail to the
Adobe OpenType group.

OpenType Specification