CHAPTER 5
462
Text
The following is an example of a
Style
entry in the font descriptor:
/Style << /Panose < 01 05 02 02 03 00 00 00 00 00 00 00 > >>
FD
A CIDFont may be made up of different classes of glyphs, each class requiring
different sets of the font-wide attributes that appear in font descriptors. Latin
glyphs, for example, may require different attributes than kanji glyphs. The font
descriptor defines a set of default attributes that apply to all glyphs in the
CIDFont. The
FD
entry in the font descriptor contains exceptions to these de-
faults.
The key for each entry in an
FD
dictionary is the name of a class of glyphs—that
is, a particular subset of the CIDFont’s character collection. The entry’s value is a
font descriptor whose contents are to override the font-wide attributes for that
class only. This font descriptor should contain entries for metric information
only; it should not include
FontFile
,
FontFile2
,
FontFile3
, or any of the entries list-
ed in Table 5.21.
It is strongly recommended that the
FD
dictionary contain at least the metrics for
the proportional Latin glyphs. With the information for these glyphs, a more ac-
curate substitution font can be created.
The names of the glyph classes depend on the character collection, as identified
by the
Registry
,
Ordering
, and
Supplement
entries in the
CIDSystemInfo
dictionary. Table 5.22 lists the valid keys for the Adobe-GB1, Adobe-CNS1, Ado-
be-Japan1, Adobe-Japan2, and Adobe-Korea1 character collections.