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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 animal featured on the cover of Perl Cookbook, Second
Edition is a bighorn sheep. Bighorn sheep (Ovis canadensis) are wild
sheep noted, not surprisingly, for their large, curved horns. Male
bighorns grow to approximately 5 feet long and 40 inches tall to the
shoulder and weigh up to 350 pounds. Their horns measure up to 18
inches in circumference and 4 feet long and can weigh up to 30
pounds. Despite their bulk, bighorns are adept at negotiating
mountainous terrains. With their sharp, cloven hooves they can walk on
ledges as thin as two inches. They have excellent eyesight that
enables them to locate footholds and to accurately judge distances
between ledges. They can jump as far as 20 feet from ledge to
ledge.

Competition for ewes is intense and often leads to fierce
battles that can continue for a full day. During the battle two rams
race at each other at speeds of up to 20 miles an hour, clashing their
horns together. The skull of the bighorn sheep is double-layered to
provide protection from these blows. Horn size is a significant factor
in determining rank, and rams will only fight other rams with an
equivalently sized horn. Mature males usually stay apart from the
females and young. In these "bachelor flocks" the lower-ranking males
often play the part of ewes and behave in a submissive manner toward
the dominant males. The dominant male, in turn, behaves like a
courting ram and mounts the lower-ranking male. This behavior is
believed to enable the rams to live together without rank disputes
that might otherwise drive the lower-ranking males out of the
flock.

Bighorns can be found in the Rocky Mountains from Canada to
Colorado and in the desert from California to west Texas and
Mexico. They are threatened with extinction as a result of disease,
habitat reduction, and hunting.

Genevieve d''Entremont was the production editor and copyeditor
for Perl Cookbook, Second Edition. Phil Dangler, Emily Quill, Matt
Hutchinson, and Colleen Gorman provided quality control. Mary Agner
and Jamie Peppard provided production assistance. Nancy Crumpton wrote
the index.

Edie Freedman designed the cover of this book, using a
19th-century engraving from the Dover Pictorial Archive. Emma Colby
produced the cover layout with QuarkXPress 4.1 using Adobe''s ITC
Garamond font.

David Futato designed the interior layout. This book was
converted by Julie Hawks and Andrew Savikas from Pod 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 and Jessamyn Read using Macromedia FreeHand 9 and Adobe
Photoshop 6. The warning icon was drawn by Christopher Bing. This
colophon was written by Clairemarie Fisher O''Leary.