The E-Content Company Announces XML-based PowerPoint Authoring; Will Enable e-Business to Leverage PowerPoint Information Assets for Customer Relationship Applications.

WALTHAM, Mass.--(BUSINESS WIRE)--Dec. 1, 1999--

The e-content company, a division of Interleaf, Inc. (Nasdaq:LEAF) and leader in delivering powerful XML-based content management solutions for e-business initiatives, today announced the addition of Microsoft PowerPoint(R) as an integrated authoring tool within BladeRunner(TM) for the creation of XML content for e-business applications. Marking an industry first, users of BladeRunner will be able to generate XML content from PowerPoint to gain greater access and leverage valuable information stored in this popular presentation software.

"The e-content company's integration of PowerPoint as an authoring ability within BladeRunner is a significant milestone in extending the power of XML across the desktop," said Mike Maziarka, Director at CAP Ventures. "Marketing organizations, training companies and financial institutions who rely heavily on PowerPoint will particularly benefit from having the ability to transform that content to XML, allowing them to further customize and target information from multiple sources to a variety of audiences."

"For many organizations, the ability to leverage, share and gain control over corporate information assets is critical to compete in today's e-business world," said Jaime Ellertson, president and CEO of the e-content company. "By giving organizations the ability to author XML content with PowerPoint, we significantly extend the power of BladeRunner. Most importantly, we provide users with a more robust e-business tool for delivering valuable information to their customers and in turn allow them to forge deeper relationships with their customer base."

PowerPoint is the latest addition of software tools to extend the authoring capability of BladeRunner further into the popular Microsoft Office suite. PowerPoint joins Microsoft(R) Word and Interleaf QuickSilver(TM) as integrated XML authoring solutions within BladeRunner. QuickSilver is a full-featured application suite for creating and assembling long, complex documents by individuals or workgroups, offering customers full access to the advanced features of Interleaf technology while allowing the creation of reusable content based on the open XML standard.

The addition of Microsoft PowerPoint(R) as an integrated authoring tool within BladeRunner will be available in the first quarter of calendar year 2000.

About BladeRunner

BladeRunner is the first complete content management solution for the extended enterprise that enables companies to create, manage, and deliver e-content - targeted, timely, personalized, intelligent and medium-aware business content - for web-enabled applications, using eXtensible Markup Language ("XML") as its technology backbone and Microsoft Word for content creation. Companies are able to apply intelligence, structure and style to their business information, generate output in a variety of formats, and dynamically integrate that information with other electronic and business processes in support of their e-business initiatives. BladeRunner enables organizations to realize improved time to market, increase revenues and gain a competitive advantage by providing a solution designed to leverage information content and facilitate business transactions throughout the information value chain, connecting corporations with their customers, suppliers, distributors, and partners.

About the e-content company

The e-content company is a separate business segment of Interleaf, dedicated to the development of XML-based content management solutions for e-business applications. Since the group was assembled in 1998 with dedicated development, consulting, sales and marketing resources, the e-content company has emerged as the leader in XML-based content management solutions. The e-content company develops and delivers BladeRunner, the division's flagship solution that provides the only end-to-end XML-based content management solution for e-business applications. Additional information on the e-content company can be found on the World Wide Web at http://www.xmlecontent.com.

About Interleaf

Interleaf, Inc. provides enterprise-wide software solutions for content management and high-end publishing. These solutions provide Global 2000 customers with a distinct competitive advantage by enabling them to deploy e-business applications that improve operating efficiency and customer satisfaction, while driving revenue and profitability. Interleaf's software products make it easy for companies to assemble, manage, retrieve, distribute and publish business-critical information across the corporate enterprise and beyond. Information about Interleaf's products is available from Interleaf Direct at 1-800-955-5323 or on the World Wide Web at http://www.interleaf.com.

Interleaf(R), BladeRunner(TM), e-content(TM) and QuickSilver(TM) are either registered trademarks or trademarks of Interleaf, Inc. Microsoft(R) Word is a trademark of Microsoft Corporation.

The press release contains forward-looking statements within the meaning of the Securities Laws, and actual events and the Company's results could differ materially from those set forth in the forward-looking statements. Certain factors that might cause such a difference include, among other things, delays or difficulties in the integration of PowerPoint within BladeRunner; changes in XML and XSL standards and technology; difficulties in attracting and retaining qualified technical personnel; the emergence of alternative technologies or standards; the announcement of competing products which provide the same solution via different means; and those factors discussed in the section entitled "Risk Factors" on pages 20-22 of the Company's Annual Report on Form 10-K dated June 29, 1999.