Header
Name INDEX
Top DICT INDEX
String INDEX
Global Subr INDEX
--
Encodings
Charsets
FDSelect
CharStrings INDEX per-font
Font DICT INDEX per-font 
Private DICT per-font 
Local Subr INDEX per-font
Copyright etc
---
Card8 
Card16
Offset <?>
OffSize 1-4, byte
SID 2-byte string ID
---
Operand encoding:
size 1: b0: 32-246, val=b0-139
size 2: b0:247-250, val=(b0-247)mal 256 plus b1 plus 108
size 3: b0:251-254, val=-(b0-251)mal 256 - b1-108
size 5: b0:29, val=b1<<24 or b2 << 16 or b3 << 8 or b4
real number: b0:30, var-length seq. 4-bit nibbles per byte MSN:
   nibble=0-9 digit
          a decimal point
          b E
          c E-
          d reserved
          e minus
          f end of number (padded to a full byte)

INDEX:
Card16 count        if 0, stops here.
offsize offsize
Offset offset[count plus 1]; last element is for skipping the index.
Card8 data <--- offsets relative to here
-----
HEADER:
Card8 major = 1
Card8 minor = 0
Card8 header_size
OffSize offset size
--------
Top DICT:
  version 0, SID
  Notice  1, SID
  Copyright 12 0, SID
  FullName 2, SID
  FamilyName 3, SID
  Weight 4, SID
  isFixedPitch 12 1, boolean
  ItalicAngle 12 2, number
  UnderlinePosition 12 3, number
  UnderlineThickness 12 4, number
  PaintType 12 5, number
  CharstringType 12 6, number
  FontMatrix 12 7, array
  UniqueID 13, number
  FontBBox 5, array
  StrokeWidth 12 8, number
  XUID 14, array
  charset 15, number, charset offset(0)
  Encoding 16, number, encoding offset(0)
  CharStrings 17, number, charstrings offset(0)
  Private 18, number, number Private DICT size and offset(0)
  SyntheticBase 12 20, number synthetic base font index
  PostScript 12 21, SID code
  BaseFontName 12 22, SID
  BaseFontBlend 12 23, delta
  -- for CIDFonts:
  ROS 12 30, SID
  CIDFontVersion 12 31, number
  CIDFontRevision 12 32, number
  CIDFontType 12 33, number
  CIDCount 12 34, number
  UIDBase 12 35, number
  FontDictArray 12 36, number, Font DICT INDEX offset(0)
  FontDictSelect 12 37, number, Font DICT select offset(0)
  FontName 12 38, SID