README for CSHOTMake sure you have installed the  CWP/SU Free Seismic Unix packageavailable from: ftp.cwp.mines.edu    pub/cwpcodesbefore attempting to install this code.Caveat. I have noticed that there is a compiler bug on SGI thatcauses cshot1 to have problems. This bug is only apparent ifoptimization is used. If   Demo01 does not show a multi-layermodel, try recompiling the codes with  OPTF =     set tonothing.The Unix (tar) distribution includes the subdirectories Demo01, Demo02,... containing usage examples similar to those in the original CSHOTrelease notes.  Several of the Demos (02, 11, 12, 13, 14) highlight newcapabilities of CSHOT.  It is recommended that users copy these directoriesto their own work areas in order to preserve the originals and keepthe Demo directories from getting cluttered.**************************************************************** Running the Xgraph or Psgraph files in a Demo directory,* while reading the corresponding example in the Release Notes* is the way to learn how to use CSHOT !!!***************************************************************The "graphics" in the new CSHOT consists of writing an ascii fileto stdout that contains groups headed by two integers givingrespectively the number of points in the curve and a color code,followed by the (x, z) pairs of floats.It is then easy to write a program to parse this file and do thegraphics with any local package or to change to a binary output format,etc.  The program, cshotplot.c, distributed with CSHOT forms an exampleof such a parser that, in turn, outputs binary data and a parameter filethat are the form that the CWP public domain graphics programs require.Of course, to use this implementation you need to install the CWPenvironment.  The files you need are available from CWP by anonymousftp (hilbert.Mines.Colorado.EDU or 138.67.22.6).  Just "cd pub", evokebinary mode and take cwp.tar.Z, plot.tar.Z, xcwp.tar.Z and su.tar.Z (install in that order).The Demo directories each contain the file, Xcshot, which isas an example run file using CWP's xgraph to do the model/well/ray plots (if any) and xwigb to do the sections (if any). If you prefer grayscale plots to wiggles, replace "xwigb" by "ximage".If you prefer PostScript to X, see the PScshot files in the Demodirectories--here at CWP, we use PostScript mainly for gettinghard copy, so you will have to make a few simple changes if youwant to use Display PostScript instead.Paul Docherty is still interested in comments/bug reports on CSHOT andI'll relay them to him.John Stockwell	 | john@dix.Mines.EDUCenter for Wave Phenomena (The Home of Seismic Un*x)Colorado School of MinesGolden, CO 80401 | http://www.cwp.mines.edu/cwpcodesvoice: (303) 273-3049  |    fax: (303) 273-3478.