INTRODUCTION

The arrival of L^ATEX2_e at SEP enhanced our L^ATEX typesetting system and led us to improve SEP's customized enhancements. The revised system enables us to use the script latex2html Drakos (1996) to publish our documents routinely on the Internet. Additionally, we improved the communication between a document's makefile and its corresponding L^ATEX file. Finally, we replaced a gigantic c-shell script (texpr) that governed SEP's entire document processing, by a set of small Perl scripts. These Perl scripts are easier to maintain, because they deal more flexibly with a wide range of processing choices. We hope we can share our customized L^ATEX2_e typesetting system with other communities such as SEG, TRIP (Rice University), or CWP (Colorado School of Mines).

In this paper, we first present a short example of a reproducible SEP document. In the electronic version of the document, this article can be turned into an interactive or standard HTML version, several DVI versions, and, of course, a Postscript version. The second part of the article states the basic author and reader commands (make targets), discusses the most important new features, and lists unresolved issues and goals. In an appendix, Sergey Fomel presents an annotated table of all SEP macros.

Former SEP students, especially Martin Karrenbach, Joe Dellinger, and Kamal Al-Yahya, wrote custom made L^ATEX Goosens et al. (1994); Lamport (1994) and TEX Knuth (1984) macros to enable Geophysics -style layout and reproducible figures. Sergey Fomel translated these SEP macros to L^ATEX2_e, the modern L^ATEX standard Kopka and Daly (1995). Authors at SEP can find a more elaborate document example in /usr/local/src/our/sephelp/textour/paper.tex.

The article's main topic is SEP's transition from L^ATEX to L^ATEX2_e. We usually refer to both systems as L^ATEX and use the more explicit name L^ATEX2_e only where we want to distinguish between the two versions explicitly.