COMPUTER CONFERENCE ON APPLICATIONS OF TECHNOLOGY IN TEACHING CHEMISTRY JUNE 14 TO AUGUST 20, 1993 Sponsored by: The American Chemical Society Division of Chemical Education's Committee on Computers in Chemical Education Conference Organizer: Dr. Thomas C. O'Haver Department of Chemistry and Biochemistry University of Maryland College Park, MD 20742 to2@umail.umd.edu (301) 405-1831 (301) 384-0183 INSTRUCTIONS FOR PARTICIPANTS (Updated 5/13/93) You have been registered as a participant in the CHEMCONF conference. Instructions for Participants are contained in this memorandum. A. BEFORE THE CONFERENCE (e.g. before June 14, 1993) Here are some things you can do to prepare for the conference. 1. Practice capturing, saving, and printing email messages. Many people prefer to print the papers and longer messages and then read them off-line. 2. (Optional) Some papers may have figures (graphics) associated with them. If you have a computer with graphics capability (e.g. an IBM-PC compatible with CGA, EGA, VGA, or SVGA, or any Macintosh) and you wish to be able to view figures, refer to Appendix 1: "Viewing figures" and to Appendix 3: "Software Sources" for information on the required software. If figures are to be viewed, it is convenient to print the text of the paper and read the paper off-line. 3. (Optional) Some papers may have binary computer files associated with them, such as spreadsheets, executable programs, HyperCard stacks, etc. If you wish to be able to use such material, refer to Appendix 2 "Accessing Binary Files" and to Appendix 3: "Software Sources" for information on the required software. 4. If for any reason you wish to cancel your registration, send email to LISTSERV@UMDD.UMD.EDU containing the message SIGNOFF CHEMCONF Make sure that you send this message from the SAME MAIL ADDRESS that you subscribed from. 5. If you need help, send e-mail to the conference organizer, Tom O'Haver, to2@umail.umd.edu. 6. On June 2, 1993 (the day after the deadline for participant registration), the Schedule of Papers and Discussion will be broadcast to all registered participants. This will contain the titles, paper numbers, and abstracts of all papers, the procedure for obtaining the papers you want to read, and the dates on which discussion of each paper will occur. 7. In order to reduce the chaos caused by the overlapping discussion of many conference papers, the conference will be structured into a specific discussion period for each paper. In order to reduce excess e-mail traffic, the entire set of papers, figures, and related material will not be mailed to the entire list; rather, you will obtain only those materials you are interested in, according to the instructions below. Obtain and read the papers you are interested in, compose your comments and questions, and WAIT FOR THE OFFICIAL DISCUSSION DAY FOR THAT PAPER before mailing your comments. a. To obtain copies of the schedule of discussion, the abstracts of papers, or the text of the papers themselves, send an e-mail message to listserv@umdd.umd.edu or to listserv@umdd.bitnet, any time after JUNE 10, 1993, in which the message body contains one or more of the following lines: GET SUMR93 SCHEDULE GET SUMR93 ABSTRACT GET PAPER1 TEXT GET PAPER2 TEXT GET PAPER3 TEXT and so on, with each item listed on a separate line. Depending on the network load, the material will be mailed to you within a few minutes or hours. Each paper may include a list figures that you may obtain in a similar way (e.g. GET PAPER1 FIGURE1). A complete list of all figures will be broadcast at the start of the conference. b. If you are on the Internet and have FTP capabilities, you may prefer to download the papers and related material by anonymous FTP from info.umd.edu in the directory info/Teaching/ChemConference/Papers. B. DURING THE CONFERENCE (June 14 throught August 13) The Conference is divided into three three-week sessions. There are five papers in each session. 1. SHORT QUESTIONS The first week of each session is reserved for the reading of the papers in that session and for sending SHORT QUESTIONS to the authors or other participants. A specific day is designated for SHORT QUESTIONS on each paper. For example, it is expected that Paper 1 will be read on or before June 14. In reading the paper you may have a short question for the author asking for more information or clarification of points raised in the paper. A SHORT QUESTION may be sent to the author of Paper 1 on June 14 via CHEMCONF. This will alert other participants as well as the author to the question. SHORT QUESTIONS may be sent to the other participants on the designated day. DISCUSSION of the paper WILL NOT START until at least a week after the designated time for SHORT QUESTIONS. This gives authors (and participants) at least a week to prepare answers to SHORT QUESTIONS. (See B.3 for sending comments privately to the authors.) 2. DISCUSSION A specific two days during the second and third weeks of each session is devoted to the discussion of each paper. Answers to SHORT QUESTIONS are to be sent at the beginning of the session. To send comments or questions about a particular conference paper to the entire conference, WAIT UNTIL THE DAYS DESIGNATED FOR DISCUSSION OF THAT PAPER, then mail your message to CHEMCONF@umdd.umd.edu or CHEMCONF@umdd.bitnet Please put the PAPER NUMBER IN THE SUBJECT LINE of the message (e.g. "Paper 1"), so that participants can more easily sort out conference discussions from other e-mail. Please remember that messages sent to CHEMCONF will be distributed to all CHEMCONF participants, adding to their e-mail burden. As a courtesy to other participants, please keep your messages concise, limit your discussion to the topic of the paper in question, and avoid irrelevant, redundant, and personal comments that are not of general interest. Comments about conference procedure should be directed to Tom O'Haver (to2@umail.umd.edu) or Don Rosenthal (rosen@CLVM.BITNET). 3. To send comments or questions privately to the author of the paper only, send your message to the author's email address given in the paper. Reports of typographical errors, spelling and grammatical errors should be sent directly to the author, not to CHEMCONF. Only the authors can see these messages. You can send these messages at any time. 4. To send comments or questions about the operation of the conference to the conference organizer, send your message to to2@umail.umd.edu. Only the conference organizer can see these messages. You can send these messages at any time. 5. To send commands to the LISTSERV host computer (e.g. to SUBSCRIBE, SIGNOFF, get HELP, turn mail off and on, etc), send the commands to listserv@umdd.umd.edu. Refer to Appendix 4 for a list of commands accepted by LISTSERV. Don't make the mistake of sending commands to CHEMCONF, as that will send the commands to the conference participants instead. You can send these commands at any time. 6. To TURN OFF mail from the conference during discussion periods you are not interested in, send the command SET CHEMCONF NOMAIL to LISTSERV@UMDD.UMD.EDU; to turn the mail back ON, send the command SET CHEMCONF MAIL to LISTSERV@UMDD.UMD.EDU. C. DURING THE GENERAL DISCUSSION PERIOD (August 16 through 20) The general discussion period from August 16 through 20 is an open period for the public discussion of any points brought up by the papers or by earlier discussion and for general observations concerning the topics of the conference. During this period, anyone may begin a new "thread" by contributing a message with a new subject line. Participants responding to such messages should use the SAME subject line, so as to help everyone sort out the overlapping threads of conversation. THE CAREFUL USE OF SUBJECT LINES IS ESPECIALLY IMPORTANT DURING THE GENERAL DISCUSSION PERIOD. If you are not interested in the general discussion, send the command SET CHEMCONF NOMAIL to LISTSERV@UMDD.UMD.EDU on August 16. D. AFTER THE CONFERENCE At the start of the conference, an evaluation form will be e-mailed to all participants. We ask that you answer the questions on that form and return your answers to to2@umail.umd.edu by Aug. 20. This will help us to evaluate the conference and make improvements the next time such a conference is conducted. THE EVALUATION OF THE CONFERENCE AND PERFECTION OF THE CONFERENCING PROCESS IS A VERY IMPORTANT GOAL OF THE CHEMCONF EXPERIMENT. After that, you may sign off at any time by sending SIGNOFF CHEMCONF to listserv@umdd.umd.edu ------------------------------------------------------------------------- APPENDIX 1: VIEWING FIGURES A. BASIC CONCEPTS Some papers in this conference may have figures. The figures are available separately from the text of the papers. If you are interested in viewing the figures, you can obtain them by LISTSERV e-mail request or by anonymous FTP. You will be able to view the figures only if your personal computer or terminal has graphics capabilities. All figures will be bit-map (raster) graphics in a platform-independent file format called the Graphics Interchange Format (GIF). These figures can be viewed on any computer that has a GIF viewer (e.g. IBM-PC, Macintosh, Unix graphics workstation, Amiga, etc.) It does not matter on which platform the graphics were originally generated. Instructions for obtaining the software required for viewing figures on IBM-PC and Macintosh platforms are given in Appendix 3: "Software Sources". The delivery of figures by e-mail is not 100% reliable; some mail programs and gateways modify the contents of the message body (removing spaces and switching certain characters), resulting in corrupted files that can not be decoded properly. File transfer by FTP is more reliable. There are three steps involved in viewing these figures: (1) "down- loading" the figure to your personal computer; (2) converting it into a binary file; and (3) opening the resulting file in a GIF viewer. B. DOWNLOADING FIGURES TO YOUR PERSONAL COMPUTER 1. If you are on the Internet and have FTP capabilities, it will be simplest to download the GIF files from info.umd.edu in the path info/Teaching/ChemConference. Both the GIF binaries and the text-encoded ".uue" versions will be available. Download the binary GIF files if your site can handle binary FTP transfers; otherwise you will have to get the text-encoded versions. Contact your local computer people for help in using FTP. If you have a Macintosh with MacTCP and its own Internet IP number, you can GREATLY SIMPLIFY the process of accessing the papers and figures by using a special version of Fetch 2.1, available from info.umd.edu in the path info/Teaching/ChemConference/Software/Mac. Refer to the "readme" file "Fetch2.1.ReadMe" for more information. If you do not have FTP, you can obtain the figures in text- encoded form by e-mail request from the LISTSERV. For example, to get the text and figures 1 and 2 of Paper 1, send an e-mail message to LISTSERV@UMDD.UMD.EDU in which the message body reads: GET PAPER1 TEXT GET PAPER1 FIGURE1 GET PAPER1 FIGURE2 You can request any number of papers and figures in one message. The figures will be sent to you by return e-mail. Then you capture the message text of each figure and store it on your personal computer. The exact way you do this depends on your mail system and on the terminal program you use to read your e-mail. Here are two common methods; use one OR the other: a) Put your terminal program into ASCII download mode and then list (view, type or print) the message. Save each figure as a separate file this way. Put all the files in the same subdirectory as the decoder and GIF viewer programs. OR b) Use your mail server's Save command to store the messages as text files in the file system of the mail server. For example, on a Unix system you might type s 2 smith.fg1 s 3 smith.fg2 in order to save messages 2 and 3 as text files named smith.fg1 and smith.fg2, respectively. Then transfer those files to your PC via FTP or Kermit or ZModem or whatever works for you. Put all the files in the same subdirectory as the decoder and GIF viewer programs. 2. Decode the text file for each figure into a binary GIF file. (Internet FTP users who have downloaded the GIF files in binary format can skip this step and go on to C. VIEWING FIGURES) a) ON AN IBM-PC COMPATIBLE: From the DOS command line, "CD" to the directory containing the graphic files, then type UUDECODE SMITH.FG1 UUDECODE SMITH.FG2 and so on. Don't worry about the mail header; UUDECODE ignores it. b) ON A MACINTOSH: Launch UUTool, press COMMAND-D, then select the desired file and press RETURN. Repeat for each figure. Don't worry about the mail header; UUTool ignores it. Once you have completed these steps, you may delete (trash) the text message files, in order to save disk space. C. VIEWING FIGURES RUN A GIF VIEWER program and load (open) each figure for viewing. The details depend on which operating system you are using: a) MS-DOS: Execute your GIF viewer program, use the arrow keys to select the desired file, then press RETURN to view. The recommended viewers SVGA, VPIC and CVIEW work similarly. The quality of the results will depend on the graphics modes available on your hardware; most GIF viewers will sense and use the best available mode. You will get the best results if you have VGA or Super VGA (SVGA) modes and a color monitor. b) MICROSOFT WINDOWS (3.1): WinGif and Paint Shop Pro are two capable GIF viewers for Windows. Launch the program in the usual way, click to clear the greeting screen, select Open from the File menu, then double-click on the desired GIF file. If you view a 256-color graphic on a screen with fewer colors, these programs will automatically "dither" the image down. c) MACINTOSH (System 6 or 7): Launch the GIF viewer, click to clear the greeting screen, select Open from the File menu and double-click on the desired GIF file. If you view a color graphic on a monochrome (1-bit) screen, CyberGIF and GIFConverter will automatically "dither" the graphic into a simulated gray scale. If you have a color Mac set it to the largest screen depth (using Monitors in the Control Panel) so you can see color graphics with the highest quality. D. PRINTING GRAPHICS. Of the programs mentioned here, only WinGif and Paint Shop Pro for Windows and GIFConverter for the Macintosh support printing. All can print black-and-while line drawings and all will produce dithered approximations of continuous-tone images. Digitized color photographs will usually look better on the screen than on a print-out. Note: It will probably be most convenient if you make a print-out of the text of a paper, capture and convert all the associated figures, then use the GIF viewer to display the figures while you are reading the hardcopy of the text. --------------------------------- APPENDIX 2: ACCESSING BINARY FILES Some papers may have binary computer files associated with them, such as spreadsheets, executable programs, HyperCard stacks, etc. An explanation of the purpose and use of these files will be found in the main text of the paper. In must be understood that, unlike the figures, these files are platform-specific and will be of interest only if you have the required hardware. Moreover, some files (e.g. spreadsheet templates) require that you have certain commercial software (e.g. a particular spreadsheet program). There are two steps involved in accessing these files: (1) down- loading the files to your personal computer; (2) converting the text to a binary file using a uudecode program. If fact this is exactly the same as "B. DOWNLOADING FIGURES TO YOUR PERSONAL COMPUTER", above. If you are an Internet user and can use FTP (File Transfer Protocol), it will be simplest to download the files by anonymous FTP from info.umd.edu in the path info/Teaching/ChemConference. --------------------------------- APPENDIX 3: SOFTWARE SOURCES This appendix describes how to obtain the software needed to view figures and access the binary files that may accompany some of the conference papers. No special software is required to read the TEXT of the papers (other than the program you use to read your e-mail). For viewing figures will need a GIF viewer (e.g SVGA, VPIC, or CVIEW for MS-DOS, WINGIF or Paint Shop Pro for Windows, or CyberGIF, GIFConverter, or QuickGIF for Macintosh). Many other GIF viewers are available that might be used as well. If you download the text-encoded GIF files, you will also need a text decoding program (UUDECODE for MS-DOS or UUTool for Macintosh). All of these programs are either freeware or shareware and are widely available from various sources: a) See if your local computer expert has copies of these programs. b) Ask your Computer Center. Many college computer centers keep large collections of freeware and shareware that you can copy. c) If you are on the Internet and have FTP capabilities; you (or your local computer expert) can download all of these programs from info.umd.edu in the path info/Teaching/ChemConference/Software/PC or info/Teaching/ChemConference/Software/Macintosh. Contact your local computer people for help in using FTP. d) If you have an account of any of the public on-line information services such as Compuserve, GEnie, America Online, or Delphi, you can download these programs from their file libraries. e) You may send a formatted disk in a stamped, self-addressed disk mailer, to Prof. T. C. O'Haver, Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, stating clearly whether you want the MS-DOS or Macintosh versions of the software. --------- OTHER FTP SITES IN THE CONTINENTAL USA FOR DOWNLOADING THE SOFTWARE (Updated 3/20/93 by T. C. O'H.) All the software you need should be available in info.umd.edu in the path info/Teaching/ChemConference/Software, but here are some other sites that have those programs: UUENCODE/UUDECODE TEXT CODING for MS-DOS: UUENCODE/UUDECODE (freeware) info.umd.edu info/Computers/PC/Unix/uuexe520.zip pc.usl.edu pub/msdos/usenet/uuexe520.zip server.uga.edu pub/msdos/uuexe520.zip wuarchive.wustl.edu mirrors/msdos/filutl/uuexe520.zip for Macintosh: UUTool (freeware) sumex-aim.stanford.edu info-mac/util/uutool-232.hqx wuarchive.wustl.edu mirrors/info-mac/util/uutool-232.hqx ftp.uu.net systems/mac/info-mac/util/uutool-232.hqx GIF VIEWERS for MS-DOS: SVGA: (shareware, $15) wuarchive.wustl.edu mirrors/msdos/graphics/svga111.zip rigel.acs.oakland.edu pub/msdos/graphics/svga111.zip VPIC: (shareware, $15) wuarchive.wustl.edu mirrors/msdos/gif/vpic51.zip rigel.acs.oakland.edu pub/msdos/gif/vpic51.zip for Windows: WinGIF (shareware, $15) ftp.cica.indiana.edu pub/pc/win3/desktop/wingif14.zip for Macintosh: CyberGif: (shareware, $15) sumex-aim.stanford.edu info-mac/art/gif/cyber-gif.hqx archive.umich.edu mac/graphics/graphicsutil/cybergif1.2.sit.hqx QuickGIF (shareware, $30) archive.umich.edu pub/mac/graphics/graphicsutilquickgif1.0.sit.hqx wuarchive.wustl.edu mirrors/macintosh/appl/quickgif.sit GIFConverter (shareware, $40) archive.umich.edu pub/mac/graphics/graphicsutil/gifconverter2.3b2.cpt.hqx sumex-aim.stanford.edu info-mac/art/gif/gif-converter-232.hqx DECOMPRESSION/UNSTUFFING/UNZIPPING/DECODING for downloaded files info.umd.edu info/Computers/Macintosh/Utilities/stuffitexpander-3.01.sea info/Computers/PC/unzip.exe ----------------------------------- APPENDIX 4: LISTSERV COMMANDS The following is a list of commands that are accepted by the LISTSERV host computer. You may send these commands as e-mail messages to listserv@umdd.umd.edu Don't make the mistake of sending commands to CHEMCONF, as that will send the commands to the conference participants instead. Make sure that you send commands from the SAME MAIL ADDRESS that you subscribed from. You can send these commands at any time. SUBSCRIBE CHEMCONF Register for the conference SIGNOFF CHEMCONF Cancel your registration You can use the following commands to turn off and on the flow of messages during the conference in order to selectively view only the discussion of the papers that interest you: SET CHEMCONF NOMAIL Temporarily turn off mail deliveries SET CHEMCONF MAIL Turn mail deliveries back on The following commands cause the LISTSERV to return the indicated information to you by e-mail: INDEX CHEMCONF List of files in the CHEMCONF database GET CHEMCONF WELCOME Welcome message & Instructions for Participants GET SUMR93 TITLES Titles of papers for CHEMCONF summer '93 GET SUMR93 SCHEDULE Schedule of papers for CHEMCONF summer '93 GET SUMR93 ABSTRACT Abstracts of papers for CHEMCONF summer '93 REVIEW CHEMCONF COUNTRIES List of all participants on CHEMCONF, by country GET PAPER1 TEXT Text of Paper 1 GET PAPER2 TEXT Text of Paper 2 GET PAPER1 FIGURE1 Figure 1 of Paper 1, as a uu-encoded GIF file. --- and so forth --- GET CHEMCONF LOG9306 Monthly transcript of CHEMCONF traffic for 16/93 HELP List of commonly used commands INFO PRESENT Introduction to LISTSERV for new users INFO GENINTRO General information about LISTSERV INFO ? List of available documentation files You can request any number of items in one mail message, each item on a separate line. Each item will be sent to you in a separate mail message. Depending on the network load, these materials will be mailed to you within a few minutes or hours, although longer delays are possible. --------------------------------- APPENDIX 5: HELPFUL HINTS AND SUGGESTIONS a. One of the problems of an e-mail based conference is sorting out all the overlapping threads of conversation. When you are responding to or asking about a specific passage in a paper or message, a very helpful technique is to quote a small passage from that paper or message in your response and to place a ">" character at the beginning of each quoted line, e.g.: > We used the....so-and-so...in order to.... We tried that too, but we found that.... The ">" character in this example is an e-mail convention indicating that that line is quoted from another message. There is no need to re-type the quoted passage if you have saved it on the file system of your computer; just Copy and Paste the desired passage into your message, then type ">" characters in front of each line. Another helpful technique to refer to a previous message is to specify the time and date, e.g. 2-11-93 8:53 EST. Depending on the way that participants store messages, this may make it easier to find a particular message. b. Many mail systems have a "Reply" command that saves you the trouble of typing the return address. Be careful when using the reply command to reply to messages received from mail lists such as CHEMCONF: your reply goes to the ENTIRE LIST, so everyone sees it. This is usually what you want in a public discussion. If, on the other hand, you intend to reply ONLY to one individual and not to the whole list, you have to use the Send or Mail command and type the individual's address. You can tell that a message is sent via CHEMCONF because its header will have a Sender line like this: Sender: Conferences on Chemistry Research and Education in addition to the From: line that tells you who originated the message. Remember: the Reply command replies to the SENDER, NOT to the originator. Messages from individuals have no Sender line. c. Make sure that you have enough free space on your hard disk and enough blank floppy disks. It is likely that a single paper with figures may require 50 to 200 Kbytes of disk space. d. If your desktop computer uses a graphical user interface with windows, a mouse, etc., you may find it convenient to run your favorite word processor or text editor along with your terminal program. That way you can use the Copy and Paste commands (under the Edit menu) to work between the terminal window and text editor windows. (McSink for the Mac and Notepad for Windows work well). You can then scroll through the terminal session text, select any text of interest, copy it, and paste it directly into a text editor window. Conversely, you can open previously-saved text files, copy all or a portion, and paste directly into a terminal session, e.g., into a mail message or into the command line of the remote host. (Remember that pasting text is equivalent to typing it). This is a convenient way to send e-mail messages that you previously composed off-line, to paraphrase passages from previous mail messages, to insert a signature address, to copy email address from your personal "email address book" text file into the TO: line when sending mail or from the From: line to your address book, to enter favorite ftp site address, etc. This can save a lot of typing. e. If you use your word processor to compose messages off- line, limit your text to "plain ASCII", i.e. don't use special characters that ASCII e-mail can't handle and that other people's computers can't display properly, e.g. Greek characters, special math characters, "curley quotes", subscripts, bullets, em-dashs, the "degree" symbol, arrows, European characters (accents, tilde, umlaut, etc.), control characters (e.g.form-feeds, tabs, escape sequences, etc.). boldface, underlining, or italics. Change the font of the entire text to a mono-spaced font and adjust the margins so that the line length never exceeds 70 characters. If your word processor or text editor is of the type that simulates a left margin by inserting leading spaces in front of each line, set the left margin to zero. Replace tab formatting with spaces. (Remember that the effect of TAB CHARACTERS in a document depends on the position of the TAB STOPS in the reader's editor or terminal program, which you can not predict. So you have to format indented lines and tables using spaces, assuming a mono-spaced font). Save the document in "text only" format with a carriage return at the end of each line. f. Would like to practice the process of capturing (downloading) papers and graphics before the actual summer conference starts? During the first two weeks of February, 1993, a "Trial Session" of the CHEMCONF On-line Conference was conducted for the purpose of testing and debugging the conference format. That trial involved three papers, 25 GIF figures, and over 200 participants from 24 countries. Those of you who SUBscribed to CHEMCONF after Feb. 1, 1993, will have missed the trial session but still can retrieve all the material related to that trial. The complete set of papers, figures, and other material is available on Internet by anonymous FTP at info.umd.edu in info/Teaching/ChemConference/TrialSession, and by modem dialup at (301) 403-4333 (300 - 2400 bps) or (301) 403- 4444 (9600 - 14400 bps). You can transfer (download) any of this material to your local computer by FTP (if you are accessing this system over the Internet) or by Kermit (if you are accessing this system by modem dial-up). With the exception of the files in GIFbinary, these are text files that may be viewed on-line or transferred by setting FTP or Kermit in TEXT mode. The files in GIFbinaries (with a ".GIF" extension) are binary graphics files that must be transferred by setting FTP or Kermit in BINARY mode. MAKE SURE YOU SET THE MODE before you begin the transfer. (Binary GIF files downloaded in text mode will not be viewable). The files in UUold are the UU-encoded (text) versions of the graphics files, for those of you who can not FTP binary files. For those who do not have FTP, you can have the CHEMCONF materials e-mailed to you upon demand. Send an e-mail message to listserv@umdd.umd.edu or listserv@umdd.bitnet, in which the message body contains one or more of the following lines: GET CHEMCONF WELCOME GET AUTHOR INSTRUCT GET TRIAL PAPER1 GET TRIAL PAPER2 GET TRIAL PAPER3 GET TRIAL FIGURE1 GET TRIAL FIGURE2 and so on, up to TRIAL FIGURE24 Be aware, however, that the DELIVERY OF FIGURES BY E-MAIL IS NOT 100% RELIABLE; some mail programs and gateways modify the contents of the message body (removing spaces and switching certain characters), resulting in corrupted files that can not be decoded properly. File transfer by FTP is more reliable. To get a more complete listing of available files in the CHEMCONF LISTSERV database, send the command INDEX CHEMCONF. Sometime during May, 1993, the contents the CHEMCONF LISTSERV database and FTP site will be updated for the Summer conference.