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Frequently Asked Questions (FAQS);faqs.278
Downloading is the process of transferring information from one
device to another. This transferral is called downloading when the
transfer flows from a device of (relatively) more power to one of
(relatively) less power. Sending new fonts to your printer so that
it ``learns'' how to print characters in that font is called
downloading.
font
A particular collection of characters of a typeface with unique
parameters in the 'Variation vector', a particular instance of values
for orientation, size, posture, weight, etc., values. The word font or
fount is derived from the word foundry, where, originally, type was cast.
It has come to mean the vehicle which holds the typeface character
collection. A font can be metal, photographic film, or electronic media
(cartridge, tape, disk).
glyph
(1) The actual shape (bit pattern, outline) of a character image. For
example, an italic 'a' and a roman 'a' are two different glyphs
representing the same underlying character. In this strict sense, any
two images which differ in shape constitute different glyphs. In this
usage, "glyph" is a synonym for "character image", or simply "image".
(2) A kind of idealized surface form derived from some combination of
underlying characters in some specific context, rather than an actual
character image. In this broad usage, two images would constitute the
same glyph whenever they have essentially the same topology (as in
oblique 'a' and roman 'a'), but different glyphs when one is written
with a hooked top and the other without (the way one prints an 'a' by
hand). In this usage, "glyph" is a synonym for "glyph type," where
glyph is defined as in sense 1.
hints
When a character is described in outline format the outline has
unlimited resolution. If you make it ten times as big, it is just as
accurate as if it were ten times as small.
However, to be of use, we must transfer the character outline to a
sheet of paper through a device called a raster image processor
(RIP). The RIP builds the image of the character out of lots of
little squares called picture elements (pixels).
The problem is, a pixel has physical size and can be printed only as
either black or white. Look at a sheet of graph paper. Rows and
columns of little squares (think: pixels). Draw a large `O' in the
middle of the graph paper. Darken in all the squares touched by the
O. Do the darkened squares form a letter that looks like the O you
drew? This is the problem with low resolution (300 dpi). Which pixels
do you turn on and which do you leave off to most accurately
reproduce the character?
All methods of hinting strive to fit (map) the outline of a character
onto the pixel grid and produce the most pleasing/recognizable
character no matter how coarse the grid is.
kerning
(noun): That portion of a letter which extends beyond its width,
that is, the letter shapes that overhang - the projection of a
character beyond its sidebearings.
(verb): The function of adjusting the intercharacter spacing in
character groups (words) to improve their appearance. Some letter
combinations (``AV'' and ``To'', for example) appear farther apart
than others because of the shapes of the individual letters.
Many sophisticated word processors move these letter combinations
closer together automatically.
outline font/format
See 'scalable font'
scalable font
A scalable font, unlike a bitmapped font, is defined mathematically
and can be rendered at any requested size (within reason).
softfont
A softfont is a bitmapped or scalable description of a typeface or
font. They can be downloaded to your printer and used just like any
other printer font. Unlike built-in and cartridge fonts, softfonts
use memory inside your printer. Downloading a lot of softfonts may
reduce the printers ability to construct complex pages.
symbol set
The symbol set of a font describes the relative positions of
individual characters within the font. Since there can only be 256
characters in most fonts, and there are well over 256 different
characters used in professional document preparation, there needs to
be some way to map characters into positions within the font. The
symbol set serves this purpose. It identifies the ``map'' used to
position characters within the font.
typeface
The features by which a character's design is recognized, hence the word
face. Within the Latin language group of graphic shapes are the
following forms: Uncial, Blackletter, Serif, Sans Serif, Scripts, and
Decorative. Each form characterizes one or more designs. Example:
Serif form contains four designs called Old Style, Transitional, Modern,
and Slab Serif designs. The typeface called Bodoni is a Modern design,
while Times Roman is a Transitional design.
7. Bibliography / Other Resources
Editors note: the following books have been suggested by readers of
comp.fonts. They are listed in no particular order. I have lost the
citations for some of the submissions. If you wrote a review that
appears below and you aren't credited, please let norm
<walsh@cs.umass.edu> know.
I have decided that this is the best section for pointers to other
font resources (specs and other documents, for example). These appear
after the traditional bibliographic entries. As usual I will happily
accept entries for this section. As of 9/92, the only files listed
are the TrueType font information files available from Microsoft
7.1. The Bibliography
_The Mac is Not a Typewriter_, Robin Williams, Peachpit Press.
A good, clear explanation of what typography is, and how to get it from
your computer. Mac-specific, but full of excellent general advice. I
think there's also a PC version. Available at most computer bookstores
_Rhyme and Reason: A Typographic Novel_, Erik Spiekermann.
_Typographical attitude!_, H. Berthold AG, ISBN 3-9800722-5-8.
_Printing Types_ (2 vols), Daniel Berkely Updike, Dover Press.
Affordable edition of the most readable history of type, lots of
illustrations.
Notes: it has been suggested that the Dover edition was 3 volumes,
paperback, and the Harvard U. P. editions were 2 volumes hardback.
It appears that the Dover edition is out of print. Collectible HUP
editions are not cheap although later HUP editions may be had. Most
libraries have later HUP and Dover editions. If someone knows of
a source, please pass it along.
_The Art of Hand Lettering_, Helm Wotzkow, Dover Press, reprint from 1952.
_Looking Good In Print_, Roger C. Parker, Ventana Press,
ISBN: 0-940087-32-4.
Well, as a beginner's book, [it] isn't bad. I can't say that I agree
with the author's tastes all the time, but he at least gives some good
examples. Also there are some nice _Publish_-style makeovers.
Don Hosek <dhosek@ymir.claremont.edu>
_Book Design: A Practical Introduction_, Douglas Martin, Van Nostrand
Reinhold, New York: 1989. 206pp.
Along with Jan White's book (see below), this provides a fairly
complete guide to book design. Martin's book is somewhat more
conservative in outlook and also reflects his UK background.
Don Hosek <dhosek@ymir.claremont.edu>
_Digital Typography: An Introduction to Type and Composition for Computer
System Design_, Richard Rubinstein, Addison-Wesley, Reading, Massachusetts:
1988. 340pp.
An interesting, technological approach to typography which is worth
reading although not necessarily always worth believing. A not
insubstantial portion of the text is dedicated to representing type on
a CRT display and Rubinstein devotes some time to expressing
characteristics of typography numerically.
Don Hosek <dhosek@ymir.claremont.edu>
_Graphic Design for the Electronic Age_, Jan V. White, Watson-Guptill
Publications, New York: 1988. 212pp.
A good handbook for document design. In a well-organized approach,
White covers the principles for laying out most of the typographics
features of a technical document. White is a bit overeager to embrace
sans-serif types and in places his layout ideas seem a bit garish, but
it's still a quite worthwhile book.
Don Hosek <dhosek@ymir.claremont.edu>
_Xerox Publishing Standards: A Manual of Style and Design_, Watson-Guptill
Publications, New York: 1988. 400pp.
Overall, a disappointing book. It is divided into four sections of
widely varying intent: ``Publishing Process,'' ``Document
Organization,'' ``Writing and Style'' and ``Visual Design.'' None of
them is really adequate for the task and all are highly centered on the
Xerox method for publishing. As a guide to Xerox' process, it succeeds,
but as a manual for general use, it falls far short. In print.
Don Hosek <dhosek@ymir.claremont.edu>
_Methods of Book Design (3rd edition)_, Hugh Williamson, Yale University
Press, New Haven: 1983. 408pp.
It is a bit out-of-date as regards technology, but on issues relating
purely to design it is comprehensive and definitive. Well, I suppose
it could be argued that printing technology influences design -- e.g.
some types look fine in metal but lousy in digital imagesetting -- and
therefore a book that is out-of-date in technology can't really be
"definitive" in matters of design either. In any event, _Methods_
is more than adequate for a beginner's needs. My paper-bound copy
(ISBN 0-300-03035-5) was $13.95; cheap at twice the price!
Cameron Smith <cameron@symcom.math.uiuc.edu>
_The Thames & Hudson Manual of typography_, Rauri McLean, Thames & Hudson
An excellent book if you start getting more interested in type. Look
for Rauri McLean's other books after this one...
Liam R.E. Quim <lee@sq.sq.com>
_Typography and Why it matters_, Fernand Baudin.
There is no better introduction than [it]. It's not a primer on
subjects such as "what does Avant Garde look like," or "This is a good
font for books." It is a good primer on the things you need to know
before the rest should be considered. He's a lovely writer, to boot.
[My copy is at work, so I may have munged the title--look up Baudin
in "Books in Print" and improvise :-)]
Ari Davidow <ari@netcom.com>
_Better Type_, Betty Binns
It's definitely not a lightweight beginner's introduction, but I've
found [it] to be indispensable. It's a large-format hardcover, but
you can find it remaindered for cheap if you look around. The book
goes into great detail about how factors like line spacing, line
length, point size, and design of typeface (evenness of stroke
weight, x-height, etc.) affect readability. When you've gotten the
basics out of the way and want to learn more about the fine nuances
of type color, this book is an absolute must.
David Mandl <dmandl@bilbo.shearson.com>
_Printing Types: An Introduction..._, S. Lawson, (revised) 1990
I'd also recommend Alexander S. Lawson's books especially /Printing
Types: An Intro.../ (revised), 1990, which includes electronic types
now.
Bill Ricker <wdr@world.std.com>
_Twentieth Century Type Designers_, Sebastian Carter, 1987
Discusses adaptaters of old faces to machine caster and film/laser,
as well as new works.
Bill Ricker <wdr@world.std.com>
_Tally of Types_, Stanley Morrison, Cambridge University Press
A keepsake for CUP on the Monotype fonts he'd acquired for them when he
was Type Advisor to both Brit.Monotype & CUP (Cambridge University Press,
Cambs.UK), which discusses his hindsight on some of the great revival
fonts and some of the better new fonts.
Bill Ricker <wdr@world.std.com>
_Chicago Manual of Style_ (University of Chicago Press, 1982;
ISBN 0-226-10390-0).
The chapter on Design and Typography is most directly relevant, but there
are a lot of hints scattered all through the Chicago Manual on making your
words more readable and your pages more attractive.
Stan Brown <brown@ncoast.org>
7.2.1. (En)Coding Standards
_Unicode Consortium; The Unicode Standard, volumes 1 and 2, Worldwide
Character Encoding_, Addison-Wesley Publishing Co.
Unicode consortium e-mail address is:
unicode-inc@hq.m4.metaphor.com
To obtain more information on Unicode or to order their printed material
and/or diskettes contact:
Steven A. Greenfield
Unicode Office Manager
1965 Charleston Road
Mountain View, CA 94043
Tel. 415-966-4189
Fax. 415-966-1637
_Xerox Character Code Standard_, Xerox Corp., Xerox Systems Institute,
475 Oakmead Parkway, Sunnyvale, CA 94086
7.2.2. TrueType
George Moore <georgem@microsoft.com> announces the following information
regarding TrueType fonts:
*-[Quote]-----------------------------------------------------------*
I am pleased to announce that there is now one central location for all
official Microsoft TrueType information available on the Internet.
The 9 files listed below are available for anonymous ftp access on
ftp.uu.net (137.39.1.9) in the /vendor/microsoft/TrueType-Info
directory. The most important of those files is the TrueType Font Files
Specifications, a 400 page book which describes in excruciating detail
how to build a TrueType font. Other information is also available in
the same directory and other files will be added from time to time.
For those people who do not have ftp access to the Internet can find the
same information available for downloading on Compuserve in the
Microsoft developer relations forum (GO MSDR) in the TrueType library.
Please be aware that the TrueType specifications is a copyrighted work
of Microsoft and Apple and can not be resold for profit.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
TrueType developer information files on ftp.uu.net:
1. ttspec1.zip
ttspec2.zip
ttspec3.zip
The TrueType Specification:
These three compressed files contain the "TrueType Font Files
Specifications", a 400 page book complete with illustrations which
details how to construct a TrueType font from scratch (or build a tool
to do so), the TrueType programming language, and the complete format
of each sub-table contained in the .TTF file. These documents are
stored in Word for Windows 2.0 format and require Windows 3.1 for
printing. See the "readme.doc" (in ttspec1.zip) for printing
instructions. Requires 2.5MB of disk space after uncompression.
This manual is a superset of the similar specifications from Apple and
has added information specific to Windows that is not present in the
Apple version.
2. ttfdump.zip
An MS-DOS executable which will dump the contents of a TrueType font
out in a human-readable fashion. It allows you to dump the entire
font, or just specific sub-tables. This tool, combined with the
specifications above, allows very effective debugging or exploration
of any TrueType font. For example, to dump the contents of the 'cmap'
(character code to glyph index mapping) table, enter:
ttfdump fontname.ttf -tcmap -nx
Entering "ttfdump" with no options will give you a help message.
3. ttfname.zip
Example C source code on how to parse the contents of a TrueType font.
Although this particular example will open up the file and locate the
font name contained within the 'name' table, it could be readily
adapted to parse any other structure in the file. This compressed zip
file also contains many useful include files which have pre-defined
structures set up for the internal tables of a TrueType font file.
This code may be useful for developers who wish to parse the TrueType
data stream returned by the GetFontData() API in Windows 3.1.
4. tt-win.zip
A 31 page Word for Windows 2.0 document which is targeted for the
Windows developer who is interested in learning about some of the
capabilities TrueType adds to Windows 3.1. Contains many
illustrations.
5. embeddin.zip
A text file which describes all of the information necessary for a
Windows developer to add TrueType font embedding capabilities to their
application. Font embedding allows the application to bundle the
TrueType fonts that were used in that document and transport it to
another platform where the document can be viewed or printed
correctly.
6. tt-talk.zip
The TrueType Technical Talks 1 and 2. These text files describe some
of the things that are happening with TrueType behind the scenes in
Windows 3.1. The first document walks the reader through all of the
steps that occur from when the user first presses the key on the
keyboard until that character appears on the screen (scaling, hinting,
drop out control, caching and blitting). The second talk describes
one of the unique features of TrueType called non-linear scaling which
allows the font vendor to overcome some of the physical limitations of
low resolution output devices.
7. lucida.zip
This text file contains useful typographic information on the 22
Lucida fonts which are contained in the Microsoft TrueType Font Pack
for Windows. It gives pointers on line-layout, mixing and matching
fonts in the family and a little history on each typeface. This
information was written by the font's designers, Chuck Bigelow & Kris
Holmes.
8. Rules of Thumb
It is difficult to set out guidelines for font usage, because almost
any rule can be brilliantly broken under the right circumstances.
8.1. General guidelines:
Never lose track of the kind of work you're doing. An effect that
would ruin a newsletter might be just the thing for a record cover.
Know when you can safely sacrifice legibility for artistic effect.
Keep in mind the final reproduction process you'll be using. Some
effects (like reversed type, white on black) can be hard to read off
an ordinary 300-dpi laser, but will work if finals are done on a
high-resolution printer, such as a Linotronic. Will the pages be
photocopied? Offset? Onto rough paper, shiny paper? All these factors
can and should influence your choice of fonts and how you use them.
Running some comparative tests is a good idea. Better to blow off a
few sheets of laser paper now than to see a problem after thousands of
copies are made.
No one can teach you font aesthetics; it must be learned by example.
Look at beautiful magazines, posters, books with wide eyes, so that
you can see how it's done. Examine ugly printed matter critically and
consider why it's hard to read.
8.2. Good rules of thumb:
If you need a condensed font, find one that was designed that way,
rather than scaling an existing font down to a percentage. Any
scaling distorts a font's design; excessive scaling interferes with
legibility - this goes for widening as well as narrowing. Extended
faces do exist, although they aren't as common as condensed ones.
Many people feel that bold or italic type, or type in ALL CAPS, is
more legible: "This is the most important part of the newsletter,
let's put it in bold." In fact, legibility studies show that such type
is actually harder to read in bulk. Keep the text in a normal style
and weight, and find another way to emphasize it - box it, illustrate
it, run it in color, position it focally.
Too much reverse type - white on black - is hard on the eyes. It can
be a nice effect if used sparingly. Don't reverse a serif font, though
- its details will tend to fill in. Stick to reversing bold
sans-serifs, and remember to space them out a bit more than usual.
It is always safest to use a plain serif font for large amounts of
text. Because Times is widely used, it doesn't mean it should be
avoided. Fonts like Palatino, Times, Century Old Style are deservedly
popular because people can read a lot of text set in such faces
without strain.
Don't expect anyone to read extensive text set in a condensed font.
As point size gets bigger, track tighter, and (if the software allows)
reduce the spacebands as well. A spaceband in a headline size
(anything over 14 point) should be about as wide as a letter "i".
If you only have a few large headlines, hand-kerning the type, pair by
pair, can make the end result much more pleasing. Besides, working
with fonts this closely makes them familiar.
Column width and justification are major elements in design. The
narrower the column, the smaller the type can be; wide rows of small
type are very hard to read. Often it's a better idea to set narrow
columns flush left rather than justified, otherwise large gaps can
fall where hyphenation isn't possible.
Use curly quotes.
Don't put two spaces at the end of a line (. ) instead of (. ) when
using a proportionally spaced font.
9. Acknowledgements
The moderators would like to express their gratitude to the whole
community for providing insightful answers to innumerable questions. In
particular, the following people (listed alphabetically) have contributed
directly to this FAQ (apologies, in advance if anyone has been
forgotten):
Masumi Abe <abe@adobe.com>
Tim Bradshaw <tim.bradshaw@edinburgh.ac.UK>
Stan Brown <brown@ncoast.org>
Terry Carroll <tjc50@juts.ccc.amdahl.com>
Ari Davidow <ari@netcom.com>
Pat Farrell <pfarrell@cs.gmu.edu>
Yossi Gil <yogi@cs.ubc.ca>
Kesh Govinder <govinder@ph.und.ac.za>
Rick Heli <Rick.Heli@Eng.Sun.COM>
Gary <Gocek.Henr801C@Xerox.COM>
Berthold K.P. Horn <bkph@ai.mit.edu>
Don Hosek <dhosek@ymir.claremont.edu>
Bharathi Jagadeesh <bjag@nwu.edu>
David Mandl <dmandl@bilbo.shearson.com>
Kate McDonnell <?>
George Moore <georgem@microsoft.com>
Robert Morris <ram@claude.cs.umb.EDU>
Stephen Peters <speters@us.oracle.COM>
Jim Reese <Jim.Rees@umich.edu>
Bill Ricker <wdr@world.std.com>
Liam R.E. Quim <lee@sq.com>
Henry Schneiker <?>
Cameron Smith <cameron@symcom.math.uiuc.edu>
Amanda Walker <amanda@visix.com>
10. A Brief Introduction to Typography
Space, time, and bandwidth are too limiting to provide a complete
introduction to typography in this space. I'd be very willing to make
one available for anonymous ftp, if you want to write one, but I'm not
going to write it--I have neither the time nor the expertise. However,
the following description of Times, Helvetica, and Courier will suffice
for a start. For more information, several books on typography are
listed in the bibliography.
Laurence Penney <L.O.R.Penney@cm.cf.ac.uk> offers the following
description of Times, Helvetica, and Courier:
Times is a typeface designed in the 1930s for the Times newspaper in
London and is now used widely in books, magazines and DTP. Its design
is based on the typographical principles evolved since Roman times
(upper case) and the 16th century (lower case). It is called a
TRANSITIONAL typeface, after the typefaces of the 17th century which it
resembles. Like all typefaces designed for typesetting large
quantities of text, it is proportionally spaced: the i takes about a
third the width of an M. Personally I don't like Times too much and
prefer the more elegant Garamond and Baskerville, but these will
probably cost you money... Note: The Transitionals came after the Old
Styles (like Garamond) and before the Moderns (like Bodoni).
Helvetica is an example of a SANS-SERIF typeface. These first appeared
in the late 19th century in Germany and flourished in the 1920s and
30s, when they were regarded as the future of typography. It's more a
geometric design than the humanist design of Gill Sans, but less
geometric than Avant Garde and Futura. To my mind it lacks elegance,
and Adrian Frutiger's Univers shows how this kind of typeface should be
done. (Just compare the B, R, Q, a, g of Univers and Helvetica to see
what I mean -- and don't you just love Univers's superbly interpreted
ampersand ?!) Helvetica is one of the few fonts that is improved by its
BOLD version.
Another interesting approach to sans-serif is Optima, by Hermann Zapf,
which keeps the stroke-weight variations which sans-serifs usually
reject. Use sans-serif fonts for the same applications as Times, above,
but where you're less concerned with elegance, and more with a
functional appearance - they're generally reckoned to be slightly less
legible than good serifed fonts. They're also very suitable for
display work.
Courier is a typeface derived from typewriter styles. It should ONLY be
used when you want to simulate this effect (e.g. when writing letters
Courier usually appears "friendlier" than Times). Like all typewriter
fonts, it is MONOSPACED (characters all have the same width) and is
thus suitable for typesetting computer programs. However there are
nicer looking monospace fonts than Courier (which has oversize serifs),
that still remain distinct from the text fonts like Times and
Helvetica. A good one is OCR-B, designed by Frutiger. Note that
monospaced fonts are less economical on space than proportional fonts.
[ed: Following the original posting of this message, Laurence Penny and
Jason Kim <kim3@husc.harvard.edu> discussed the issue privately. The
following summary of their discussion may serve to clarify some of the
more subtle points. My thanks to Laurence and Jason for allowing me to
include this in the FAQ.]
===
LP-1> The Transitionals came after the Old Styles (like Garamond) and
before the Moderns (like Bodoni).
JK> Not necessarily true! Ideologically, yes, but not chronologically.
I believe, for example, that Bodoni predates New Century Schoolbook or
some such typeface.
LP-2> What I meant by "X came after Y" was "the first examples of X
appeared after the first examples of Y" -- it's called precis. Some
people still make steam trains, but you can still say "Steam engines
came before diesels." This is chronological, not ideological in my
book.
===
LP-1> Another interesting approach to sans-serif is Optima, by Hermann
Zapf, which keeps the stroke-weight variations which sans-serifs
usually reject. Use sans-serif fonts for the same applications as
Times, above, but where you're less concerned with elegance, and more
with a functional appearance - they're generally reckoned to be
slightly less legible than good seriffed fonts. They're also very
suitable for display work.
JK> Slightly? I have several textbooks typeset by utter fools and they
are a pain in the ass (and eyes) to read! Please don't encourage anyone
to use Optima (or any sans serif fonts for that matter) "for the same
applications as Times," which, need I remind you, was designed for
*newspaper* work!!
LP-2> OK, maybe I was a little over-generous to Univers, Helvetica,
etc., but I think variation is extremely important in typography. Have
you ever read the British magazine "CAR" ? That uses Helvetica light (I
think) in a very legible and attractive way, IMO. I agree, though,
Optima is crappy for text, but it's a very valuable experiment and
looks beautiful when printed in high quality for titling, etc. And yes,
*books* in Helvtica are generally awful.
===
JK> Serifs have been scientifically shown to be a *lot* easier on the
reader, as they guide the eyes along the lines.