Retrieve over 23,000 diagrams previously published in over 21 ACerS/NIST Phase equilibria diagram volumes as well as 2,500 electronic diagrams. Functionality includes: search commentaries and diagrams by Chemical System, published author's last name, volume number, language, publication year, and figure number; the commentary screen displays a full view of Chemical System, figure number, figure notes, references, commentary, footnotes, and contributing editors' initials; manipulate the diagram on screen with the following actions: Zoom In, Zoom Out, Lever Rule, Curve Follow, Mirror, Mol% to Wt% or Wt% to Mol%, Built in Calculator.