FOR IMMEDIATE RELEASE

EXHIBIT FAIR OPENS NEXT WEEK AT APPLE’S WWDC 2002
– WWDC Exhibit Fair will have vendors of all types and sizes
showing off the best the Mac has to offer.

WESTLAKE VILLAGE, CA — May 3, 2002 — Xplain Custom Services, the leader
in pavilion management, today announced the official “WWDC Exhibit Fair”
will be held next week during Apple’s Worldwide Developer Conference in San
Jose CA.

The Exhibit Fair “grand opening” starts at 5 p.m., Monday, May 6th.

Exhibitor Hours: Monday, May 6th — 5 p.m. to 8 p.m.
Tuesday, May 7th — 9 a.m. to 6 p.m.
Wednesday, May 8th — 9 a.m. to 6 p.m.

A complete WWDC 2002 “Exhibit Fair” participating company list is available
at (http://www.xplain.com/pavilions/wwdc2002/wwdc2002_ex_list.html).

In the exhibit area, companies will showcase their newest products which
support Mac OS X and other Apple technologies. If you’re just beginning as
a programmer, developing web content, managing networks, or have been a
part of the developer community for years, you’ll have the opportunity to
explore the cutting edge of technology, meet the experts face-to-face, and
will learn about new products for the Mac worldwide.

“The WWDC Exhibit Fair is the focal point for seeing the latest technical
wares on the Mac,” said Neil Ticktin, CEO, Xplain Corporation and Publisher
of MacTech Magazine. “With a mission focused on serving the
developer/technical communities, the WWDC Exhibit Fair will have vendors of
all types and sizes showing off the best the Mac has to offer.

In addition, DevDepot=AE is returning to WWDC this year as the always popula=
r
‘developer store’ — set up to sell a variety of developer tools and
related products throughout the conference. If you’re in need of a
developer product, DevDepot will provide you with an excellent selection,
world renowned customer service, and people who care.

For more information on DevDepot visit the web site at
http://www.devdepot.com/. If you want to find out how to get your product
to market through DevDepot, contact Nick,
mailto:vendor_relations@devdepot.com

For more information on registering for Apple’s Worldwide Developers
Conference, see http://www.apple.com/developer/wwdc2002/ (– register today!

About WWDC

During the week of May 6-10 in San Jose, California, WWDC 2002 attendees
will be the first to explore the powerful new capabilities of the next
major release of Mac OS X. And that’s just for starters. At WWDC, you’ll
receive valuable access to Apple engineers and industry experts, all eager
to help you create the world’s best Mac OS X products.

WWDC 2002 offers over 100 in-depth technical sessions covering a wide range
of technology topics. Throughout the week, a variety of special events and
activities bring developers and Apple engineers together in a fun and
casual environment. Be sure to plan a tour of the Exhibit Fair.

About Xplain Corporation

Xplain Corporation has three divisions — publishing, mail order and custom
services. The publishing division includes MacTech(r) Magazine, and THINK
Reference(tm). The mail order division operates DevDepot(r) and RadGad(sm).
Custom Services provides turnkey production services for publishers, and
tradeshow services including turnkey pavilions and onsite management.
Founded in 1984, the company has its offices in Westlake Village, CA. See
http://www.xplain.com for more information.

Press Contact:

Susan M. Worley
Xplain Custom Services
Mailto:reservations@www.mactech.com
805-435-1004 direct
805-494-9797 main

* MacTech and DevDepot are registered trademarks of Xplain Corporation.
Additional company and product names may be trademarks or registered
trademarks of the individual companies and are respectfully acknowledged.
Not responsible for typographical or other errors.