NAME

       Font::TTF::OTTags - Utilities for TrueType/OpenType tags

SYNOPSIS

         use Font::TTF::OTTags qw( %tttags %ttnames %iso639 readtagsfile );

         # Look at built-in stuff:
         $script_tag = $tttags{'SCRIPT'}{'Cypriot Syllabary'};  # returns 'cprt'
         $lang_name = $ttnames{'LANGUAGE'}{'ALT '};             # returns 'Altai'

         # Map iso639-2 tag to/from OT lang tag
         @isotags = $iso639{'ALT '};    # returns [ 'atv', 'alt' ]
         $lang_tag = $iso639{'atv'};    # returns 'ALT '

         # Read latest tags file to add to built-in definitions
         readtagsfile ("C:\\Program Files\\Microsoft VOLT\\TAGS.txt");

       First-level keys to %tttags and %ttnames are:

       SCRIPT
           retrieve script tag or name

       LANGUAGE
           retrieve language tag or name

       FEATURE
           retrieve feature tag or name

       Built-in data has been derived from the 2014-07-11 draft of the 3rd edition of ISO/IEC
       14496-22 (Information technology - Coding of audio-visual objects - Part 22: Open Font
       Format) which, when finalized and approved, will replace the second edition (ISO/IEC
       14496-22:2009).

METHODS

   readtagsfile ( filename )
       Read a file in the syntax of Tags.txt (included with Microsoft VOLT) to obtain
       additional/replacement tag definitions.

       Returns 0 if cannot open the file; else 1.

AUTHOR

       Bob Hallissy. <http://scripts.sil.org/FontUtils>.

LICENSING

       Copyright (c) 1998-2016, SIL International (http://www.sil.org)

       This module is released under the terms of the Artistic License 2.0.  For details, see the
       full text of the license in the file LICENSE.