Minor fixes:

- history
- supported OSes

doc/scsh-manual/intro.tex

@@ -22,15 +22,7 @@ in a companion paper, ``A Scheme Shell.''
 \section{Copyright \& source-code license}
 Scsh is open source. The complete sources come with the standard
 distribution, which can be downloaded off the net.
-
-For years, scsh's underlying Scheme implementation, Scheme 48, did not have an
-open-source copyright. However, around 1999/2000, the Scheme 48 authors
-graciously retrofitted a BSD-style open-source copyright onto the system.
-Swept up by the fervor, we tacked an ideologically hip license onto scsh
-source, ourselves (BSD-style, as well). Not that we ever cared before what you
-did with the system.
-
-As a result, the whole system is now open source, top-to-bottom.
+Scsh has an ideologically hip, BSD-style license.
 
 We note that the code is a rich source for other Scheme implementations
 to mine. Not only the \emph{code}, but the \emph{APIs} are available
@@ -53,11 +45,7 @@ We currently release scsh to the following Internet sites:
 \ex{\urlh{http://prdownloads.sourceforge.net/scsh/}{http://prdownloads.sourceforge.net/scsh/}} \\
 \end{flushleft}
 \end{inset}
-These sites are 
-        the MIT Project Mac ftp server,
-        the Scheme Shell home page, and
-        the Indiana Scheme Repository home page,
-respectively.
+%
 Each should have a compressed tar file of the entire scsh release,
 which includes all the source code and the manual, 
 and a separate file containing just this manual in Postscript form,
@@ -72,7 +60,7 @@ choose one close to your site, and download the tar file.
 
 \section{Building scsh}
 Scsh currently runs on a fairly large set of Unix systems, including
-Linux, NetBSD, SunOS, Solaris, AIX, NeXTSTEP, Irix, and HP-UX.
+Linux, FreeBSD, OpenBSD, NetBSD, MacOS X, SunOS, Solaris, AIX, NeXTSTEP, Irix, and HP-UX.
 We use the Gnu project's autoconfig tool to generate self-configuring
 shell scripts that customise the scsh Makefile for different OS variants.
 This means that if you use one of the common Unix implementations,
@@ -81,7 +69,7 @@ building scsh should require exactly the following steps:
 \begin{tabular}{l@{\qquad}l}
 \ex{gunzip scsh.tar.gz} &       \emph{Uncompress the release tar file.} \\
 \ex{untar xfv scsh.tar} &       \emph{Unpack the source code.}          \\
-\ex{cd scsh-0.6} &              \emph{Move to the source directory.}    \\
+\ex{cd scsh-0.6.x} &              \emph{Move to the source directory.}    \\
 \ex{./configure} &              \emph{Examine host; build Makefile.}    \\
 \ex{make} &                     \emph{Build system.}
 \end{tabular}