'PCLT' - PCL 5 Table

The 'PCLT' table is an optional table that is not used directly by Microsoft Windows v3.1, but it is highly recommended that this table be present in all TrueType font files. Extra information on many of these fields can be found in the HP PCL 5 Printer Language Technical Reference Manual available from Hewlett-Packard Boise Printer Division.

The format for the table is:

Type	Name of Entry
FIXED	Version
ULONG	FontNumber
USHORT	Pitch
USHORT	xHeight
USHORT	Style
USHORT	TypeFamily
USHORT	CapHeight
USHORT	SymbolSet
CHAR	Typeface[16]
CHAR	CharacterComplement[8]
CHAR	FileName[6]
CHAR	StrokeWeight
CHAR	WidthType
BYTE	SerifStyle
BYTE	Reserved (pad)

Version

Table version number 1.0 is represented as 0x00010000.

FontNumber

This 32-bit number is segmented in two parts. The most significant bit indicates native versus converted format. Only font vendors should create fonts with this bit zeroed. The 7 next most significant bits are assigned by Hewlett-Packard Boise Printer Division to major font vendors. The least significant 24 bits are assigned by the vendor. Font vendors should attempt to insure that each of their fonts are marked with unique values.

Vendor codes:
	A	Adobe Systems
	B	Bitstream Inc.
	C	Agfa Corporation
	H	Bigelow & Holmes
	L	Linotype Company
	M	Monotype Typography Ltd.

Pitch

The width of the space in FUnits (FUnits are described by the unitsPerEm field of the 'head' table). Monospace fonts derive the width of all characters from this field.

xHeight

The height of the optical line describing the height of the lowercase x in FUnits. This might not be the same as the measured height of the lowercase x.

Style

The most significant 6 bits are reserved. The 5 next most significant bits encode structure. The next 3 most significant bits encode appearance width. The 2 least significant bits encode posture.

Structure (bits 5-9)
	0	Solid (normal, black)
	1	Outline (hollow)
	2	Inline (incised, engraved)
	3	Contour, edged (antique, distressed)
	4	Solid with shadow
	5	Outline with shadow
	6	Inline with shadow
	7	Contour, or edged, with shadow
	8	Pattern filled
	9	Pattern filled #1 (when more than one pattern)
	10	Pattern filled #2 (when more than two patterns)
	11	Pattern filled #3 (when more than three patterns)
	12	Pattern filled with shadow
	13	Pattern filled with shadow #1 (when more than one pattern or shadow)
	14	Pattern filled with shadow #2 (when more than two patterns or shadows)
	15	Pattern filled with shadow #3 (when more than three patterns or shadows)
	16	Inverse
	17	Inverse with border
	18-31	reserved
Width (bits 2-4)
	0	normal
	1	condensed
	2	compressed, extra condensed
	3	extra compressed
	4	ultra compressed
	5	reserved
	6	expanded, extended
	7	extra expanded, extra extended
Posture (bits 0-1)
	0	upright
	1	oblique, italic
	2	alternate italic (backslanted, cursive, swash)
	3	reserved

TypeFamily

The 4 most significant bits are font vendor codes. The 12 least significant bits are typeface family codes. Both are assigned by HP Boise Division.

Vendor Codes (bits 12-15)
	0	reserved
	1	Agfa Corporation
	2	Bitstream Inc.
	3	Linotype Company
	4	Monotype Typography Ltd.
	5	Adobe Systems
	6	font repackagers
	7	vendors of unique typefaces
	8-15	reserved

CapHeight

The height of the optical line describing the top of the uppercase H in FUnits. This might not be the same as the measured height of the uppercase H.

SymbolSet

The most significant 11 bits are the value of the symbol set "number" field. The value of the least significant 5 bits, when added to 64, is the ASCII value of the symbol set "ID" field. Symbol set values are assigned by HP Boise Division. Unbound fonts, or "typefaces" should have a symbol set value of 0. See the PCL 5 Printer Language Technical Reference Manual or the PCL 5 Comparison Guide for the most recent published list of codes.

Examples
		PCL	decimal
	Windows 3.1 "ANSI"	19U	629
	Windows 3.0 "ANSI"	9U	309
	Adobe "Symbol"	19M	621
	Macintosh	12J	394
	PostScript ISO Latin 1	11J	362
	PostScript Std. Encoding	10J	330
	Code Page 1004	9J	298
	DeskTop	7J	234

TypeFace

This 16-byte ASCII string appears in the "font print" of PCL printers. Care should be taken to insure that the base string for all typefaces of a family are consistent, and that the designators for bold, italic, etc. are standardized.

Example:
	Times New
	Times New	Bd
	Times New	It
	Times New	BdIt
	Courier New
	Courier New	Bd
	Courier New	It
	Courier New	BdIt

CharacterComplement

This 8-byte field identifies the symbol collections provided by the font, each bit identifies a symbol collection and is independently interpreted. Symbol set bound fonts should have this field set to all F's (except bit 0).

Example:
	DOS/PCL Complement	0xFFFFFFFF003FFFFE
	Windows 3.1 "ANSI"	0xFFFFFFFF37FFFFFE
	Macintosh	0xFFFFFFFF36FFFFFE
	ISO 8859-1 Latin 1	0xFFFFFFFF3BFFFFFE
	ISO 8859-1,2,9 Latin 1,2,5	0xFFFFFFFF0BFFFFFE

The character collections identified by each bit are as follows:

31	ASCII (supports several standard interpretations)
30	Latin 1 extensions
29	Latin 2 extensions
28	Latin 5 extensions
27	Desktop Publishing Extensions
26	Accent Extensions (East and West Europe)
25	PCL Extensions
24	Macintosh Extensions
23	PostScript Extensions
22	Code Page Extensions

The character complement field also indicates the index mechanism used with an unbound font. Bit 0 must always be cleared when the font elements are provided in Unicode order.

FileName

This 6-byte field is composed of 3 parts. The first 3 bytes are an industry standard typeface family string. The fourth byte is a treatment character, such as R, B, I. The last two characters are either zeroes for an unbound font or a two character mnemonic for a symbol set if symbol set found.

Examples:
		TNRR00		Times New (text weight, upright)
		TNRI00		Times New Italic
		TNRB00		Times New Bold
		TNRJ00		Times New Bold Italic
		COUR00		Courier
		COUI00		Courier Italic
		COUB00		Courier Bold
		COUJ00		Courier Bold Italic
Treatment Flags:
	R		Text, normal, book, etc.
	I		Italic, oblique, slanted, etc.
	B		Bold
	J		Bold Italic, Bold Oblique
	D		Demibold
	E		Demibold Italic, Demibold Oblique
	K		Black
	G		Black Italic, Black Oblique
	L		Light
	P		Light Italic, Light Oblique
	C		Condensed
	A		Condensed Italic, Condensed Oblique
	F		Bold Condensed
	H		Bold Condensed Italic, Bold Condensed Oblique
	S		Semibold (lighter than demibold)
	T		Semibold Italic, Semibold Oblique

other treatment flags are assigned over time.

StrokeWeight

This signed 1-byte field contains the PCL stroke weight value. Only values in the range -7 to 7 are valid:

-7	Ultra Thin
-6	Extra Thin
-5	Thin
-4	Extra Light
-3	Light
-2	Demilight
-1	Semilight
0	Book, text, regular, etc.
1	Semibold (Medium, when darker than Book)
2	Demibold
3	Bold
4	Extra Bold
5	Black
6	Extra Black
7	Ultra Black, or Ultra

Type designers often use interesting names for weights or combinations of weights and styles, such as Heavy, Compact, Inserat, Bold No. 2, etc. PCL stroke weights are assigned on the basis of the entire family and use of the faces. Typically, display faces don't have a "text" weight assignment.

WidthType

This signed 1-byte field contains the PCL appearance width value. The values are not directly related to those in the appearance with field of the style word above. Only values in the range -5 to 5 are valid.

-5	Ultra Compressed
-4	Extra Compressed
-3	Compressed, or Extra Condensed
-2	Condensed
0	Normal
2	Expanded
3	Extra Expanded

SerifStyle

This signed 1-byte field contains the PCL serif style value. The most significant 2 bits of this byte specify the serif/sans or contrast/monoline characterisitics of the typeface.

Bottom 6 bit values:
	0	Sans Serif Square
	1	Sans Serif Round
	2	Serif Line
	3	Serif Triangle
	4	Serif Swath
	5	Serif Block
	6	Serif Bracket
	7	Rounded Bracket
	8	Flair Serif, Modified Sans
	9	Script Nonconnecting
	10	Script Joining
	11	Script Calligraphic
	12	Script Broken Letter
Top 2 bit values:
	0	reserved
	1	Sans Serif/Monoline
	2	Serif/Contrasting
	3	reserved

Reserved

Should be set to zero.