Adobe Systems Inc is generating some excitement with a deal it has done with Netscape Communications Corp under which the Netscape Internet navigation product will be combined with Acrobat and its PDF Portable Document Format so users of Adobe software products for printing can give their documents the same appearance when they are put up on the World Wide Web. Mac and Windows versions of Netscape Navigator 1.1 will support the Acrobat Weblink software plug-in, a free add-on application that enables Acrobat documents to link to other documents on the Internet. The Mountain View neighbours say a jointly developed future version of Netscape Navigator will seamlessly view documents in the Portable Document Format created by Acrobat software, and they will adapt the Netscape server software so users can download PDF files in bits for faster on-screen viewing. And a future version of Adobe Pagemaker will import and export PDF files and output to HyperText Markup Language more effectively than now.