1201 Adobe Illustrator 4.0 Image (Vector) The documents (files) created by Adobe Illustrator are PostScript language documents. A PostScript language document description that minimally conforms to the Document Structuring Conventions has two main parts: a prolog and a script. The prolog encapsulates information needed by other programs to interpret the file. The script describes the graphic elements on the page. 165 Georgia Tech Research Institute / Georgia Tech Research Institute 11 Jun 2012 Specification available at http://mercator.elte.hu/~saman/hu/okt/AI7FileFormat.pdf 19 Jul 2013 application/postscript MIME com.adobe.illustrator-image Apple Uniform Type Identifier fmt/419 PUID ai File extension 887 Adobe Illustrator 4.0 The first line of the file declares that the file contains a Postscript program and identifies the version of the Document Structuring Conventions to which the document conforms as 3.0. In version 4.0 files, the Creator Comment contains the string “Adobe Illustrator (TM) for Windows, version 4” 1 Absolute from BOF 0 0 252150532D41646F62652D332E30{1-128}252543726561746F723A2041646F626520496C6C7573747261746F7228544D2920666F722057696E646F77732C2076657273696F6E20342E30 Has priority over 86 Encapsulated PostScript File Format Has priority over 331 Encapsulated PostScript File Format Has priority over 332 Encapsulated PostScript File Format Has priority over 771 PostScript Has priority over 773 PostScript Has priority over 1200 Adobe Illustrator