Colophon
Our look is the result of reader comments, our
own experimentation, and feedback from distribution channels.
Distinctive covers complement our distinctive approach to technical
topics, breathing personality and life into potentially dry
subjects.
The animals on the cover of Asterisk: The Future of Telephony are
starfish. Starfish are classified as Asteroidea. They are a group of echinoderms,
spiny-skinned invertebrates found only in the sea. Most starfish
have five-fold symmetry (arms or rays in multiples of five), though
some species can have four or nine arms. But all starfish are
radially symmetrical: they have arms or rays branching out from a
central body disc. There are over 1,500 species of starfish.
Starfish live on the floor of the sea and in
tidal pools, clinging to rocks and moving (slowly) using a
water-based vascular system to manipulate their hundreds of tiny,
tube-like legs, called podia. A
small bulb or ampulla at the top
of the tube contracts, expelling water and expanding the starfish's
leg. The ampulla relaxes, and the leg retracts. Starfish use
muscles to bend their legs, but it is the flow of water pressure
that keeps the feet moving. At the tip of each leg, starfish have
suction cups that allow them to pry open clam, oyster, or mussel
shells. Many starfish can push their stomachs out through their
mouths in order to digest their prey in its shell. Starfish are
carnivores; they eat coral, fish, and snails, as well as
bivalves.
Starfish can flex and rearrange their arms to
fit into small places as they move over the ocean floor. At the end
of each arm, they have eyespots, primitive sensors that detect
light and help the starfish determine direction. Starfish also have
the ability to regenerate a missing limb. Some species can even
regrow a complete, new starfish from a severed arm.
Colleen Gorman was the production editor, and
RachelWheeler was the copyeditor for Asterisk: The Future of Telephony. Ann
Schirmer proofread the book. Colleen Gorman and Marlowe Shaeffer
provided quality control. Ellen Troutman wrote the index.
Ellie Volckhausen designed the cover of this
book, based on a series design by Edie Freedman. The cover image is
a 19th-century engraving from the Dover Pictorial Archive. Karen
Montgomery produced the cover layout with Adobe InDesign CS using
Adobe's ITC Garamond font.
David Futato designed the interior layout. This
book was converted by Keith Fahlgren to FrameMaker 5.5.6 with a
format conversion tool created by Erik Ray, Jason McIntosh, Neil
Walls, and Mike Sierra that uses Perl and XML technologies. The
text font is Linotype Birka; the heading font is Adobe Myriad
Condensed; and the code font is LucasFont's TheSans Mono Condensed.
The illustrations that appear in the book were produced by Robert
Romano, Jessamyn Read, and Lesley Borash using Macromedia FreeHand
MX and Adobe Photoshop CS. The tip and warning icons were drawn by
Christopher Bing. This colophon was written by Colleen Gorman.
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