This distribution of Mothra is a compressed "tar" format file. To unpack it, you do the following: mkdir mothra mv Mothra.tar.Z mothra cd mothra zcat Mothra.tar.Z | tar xf - rm Mothra.tar.Z (The "zcat" program is part of the "compress" package. This code has been widely circulated on the Usenet and is released with BSD 4.3.) When everything is unpacked, see the README file. Jeff Offutt May 2 1996 Gene Spafford June 11 1987 E. W. Krauser September 17 1987 Gene Spafford (317-494-7825, Purdue) 6 September 1988 The Mothra X interface (xmothra) is not supported for releases of X11 before X11R4.. You must also have the HP widgets (Xw) to install xmothra. The Xw widgets were originally provided by Hewlett-Packard Company as unsupported, user-contributed code and are used in the first edition of Doug Young's book "X Window Systems Programming and Applications With Xt", Prentice-Hall, 1989, ISBN 0-13-972167-3. You can get the Xw widgets from the ftp site ``export.lcs.mit.edu'' (/contrib/Xw.tar.Z) using anonymous ftp. Hsin Pan Gene Spafford 28 May 1992 NOTE: I have never been able to get xmothra to work anywere besides Purdue, where they have made local mods. Rumors are that it will not work outside the state of Indiana. Try kmothra (from isse.gmu.edu), which is a menu driven interface that I like better anyway. Jeff Offutt May 2 1996