If you experience difficulties, send mail to trcenter@cs.utexas.edu This directory contains a subset of University of Texas Department of Computer Sciences Technical Reports. The file named abstrax contains the report number, author, date of publication, and abstract of each report. The file named index contains the report number and author. Permission is granted at this time for the operations and uses listed below. However, this permission is non-transferable and is subject to revocation on a report-by-report basis, due to possible copyright transfers that are normal in the publication process. Any additional copyright restrictions are noted in the reports themselves. Default permissions are for anonymous ftp, electronic viewing, and single-copy printing. Permissible uses are research and browsing. Specifically prohibited are SALES of any copy, whether electronic or hardcopy, of any of these reports for any purpose. Also prohibited is copying, excerpting or extensive quoting of any report in another work without the written permission of one of the report's authors. Technical report file names in this directory consist of the prefix "tr" followed by the technical report number, and finally a suffix indicating the file format. Technical report numbers consist of two numbers, the left-most one representing the year. The file format is either a postscript file (e.g., tr92-06.ps.), or a compressed postscript file (e.g., tr92-06.ps.Z). If the file is compressed, you should, after you have ftpd it to your site, uncompress it using the Unix command uncompress . If you wish to order hard copy of any of these technical reports, there is a minimal fee. The prices are listed below. less that 30 pages $1.50 31-40 pages $2.00 41-50 pages $2.50 51-60 pages $3.00 61 or more pages $5.00 (the page number information is available in the file called abstrax) Make your U.S. bank check or international money order payable to: The University of Texas at Austin (foreign checks must be in U.S. dollars and payable through a U.S. bank) and mail to: Publications Center Department of Computer Sciences Taylor 2.124 The University of Texas at Austin Austin, TX 78712-1188