- Sept 26, 2002
- We have posted a link to purchase and download ANSI/ISA-95.00.02, the second part of the S95 Standard. This part deals with Object Model Attributes and Language Specifications. (We also fixed the link to the first part. They redesigned their site and our link was off-- Sorry!)
- August 25, 2002
- Added slides from an API presentation on standardizing XML across the petroleum and pipeline industry.
- August 24, 2002
- Navigation Bar added to top for the main pages of this website, style cleaned up.
- December 6, 2000
- Reorganized FAQ's and Documents from various pages across the site, and presented these together on a new horizontal navigation bar on the PERA Home Page. Note "Search" function is still under development, but will have the same "whole site" perspective.
- November 26, 2000
- Added description of PERA Support & Consulting Services available through Enterprise Consultants and PERA consulting partners.
- November 15, 2000
- Reorganized and edited 15 PERA Pages in response to user suggestions and comments.
- October 29, 2000
- Added S.V. Laurents and C. Federl to Credits page, and updated email and web links for previous contributors.

- October 19, 2000
- Updated Home Page and added graphics for Stone Soup Page
- October 11, 2000
- Restructured Standards section and added FAQ Page of Frequently Asked Standards Questions
- October 3, 2000
- Added information on URL (Unified Modeling Language) to Engineering Tools page.
- September 30, 2000
- Added additional articles to PERA Documentation Page and restructured links for easier access.
- August 3, 2000
- Added links to several Dictionaries of Technical Terms in related disciplines including BPR, IT, and EI.
- July 24, 2000
- Reworked website to accommodate Netscape as well as Internet Explorer browsers.
- July 17, 2000
- The Conferences section was updated with some new conferences and addition of several external "Conference Calendar" links.
- June 30, 2000
- The Engineering Tools and Standards sections were considerably expanded, dead links cleaned up, and write-ups improved.
- Dec 20, 1999
- A new section was added within "Enterprise Integration Principles" to better describe what Enterprise Architecture Diagrams are all about, as well as the concepts of:
- Oct 19, 1999
- We have been listening to your comments and suggestions. In response, we have completed a major restructuring and expansion of the PERA website with the following objectives:
- Oct 25, 1999
- We have also expanded the material on enterprise control and information products, however this is still very much a work in progress.
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