Added putenv, ftruncate (AMK).
diff --git a/Doc/lib/libposix.tex b/Doc/lib/libposix.tex
index 1032b54..6b7a312 100644
--- a/Doc/lib/libposix.tex
+++ b/Doc/lib/libposix.tex
@@ -131,6 +131,11 @@
Return status for file descriptor \var{fd}, like \code{stat()}.
\end{funcdesc}
+\begin{funcdesc}{ftruncate}{fd\, length}
+Truncate the file corresponding to file descriptor \var{fd},
+so that it is at most \var{length} bytes in size.
+\end{funcdesc}
+
\begin{funcdesc}{getcwd}{}
Return a string representing the current working directory.
\end{funcdesc}
@@ -261,6 +266,19 @@
(Not on MS-DOS.)
\end{funcdesc}
+\begin{funcdesc}{putenv}{varname\, value}
+Set the environment variable named \var{varname} to the string \var{value}.
+Such changes to the environment affect
+subprocesses started with \code{os.system()}, \code{os.popen()} or
+\code{os.fork()} and \code{os.execv()}. (Not on all systems.)
+
+When \code{putenv()} is
+supported, assignments to items in \code{os.environ} are automatically
+translated into corresponding calls to \code{os.putenv()}; however,
+calls to \code{os.putenv()} don't update \code{os.environ}, so it is
+actually preferable to assign to items of \code{os.environ}.
+\end{funcdesc}
+
\begin{funcdesc}{read}{fd\, n}
Read at most \var{n} bytes from file descriptor \var{fd}.
Return a string containing the bytes read.
@@ -281,6 +299,7 @@
\begin{funcdesc}{remove}{path}
Remove the file \var{path}. See \code{rmdir} below to remove a directory.
+This is identical to the \code{unlink} function documented below.
\end{funcdesc}
\begin{funcdesc}{rename}{src\, dst}
diff --git a/Doc/libposix.tex b/Doc/libposix.tex
index 1032b54..6b7a312 100644
--- a/Doc/libposix.tex
+++ b/Doc/libposix.tex
@@ -131,6 +131,11 @@
Return status for file descriptor \var{fd}, like \code{stat()}.
\end{funcdesc}
+\begin{funcdesc}{ftruncate}{fd\, length}
+Truncate the file corresponding to file descriptor \var{fd},
+so that it is at most \var{length} bytes in size.
+\end{funcdesc}
+
\begin{funcdesc}{getcwd}{}
Return a string representing the current working directory.
\end{funcdesc}
@@ -261,6 +266,19 @@
(Not on MS-DOS.)
\end{funcdesc}
+\begin{funcdesc}{putenv}{varname\, value}
+Set the environment variable named \var{varname} to the string \var{value}.
+Such changes to the environment affect
+subprocesses started with \code{os.system()}, \code{os.popen()} or
+\code{os.fork()} and \code{os.execv()}. (Not on all systems.)
+
+When \code{putenv()} is
+supported, assignments to items in \code{os.environ} are automatically
+translated into corresponding calls to \code{os.putenv()}; however,
+calls to \code{os.putenv()} don't update \code{os.environ}, so it is
+actually preferable to assign to items of \code{os.environ}.
+\end{funcdesc}
+
\begin{funcdesc}{read}{fd\, n}
Read at most \var{n} bytes from file descriptor \var{fd}.
Return a string containing the bytes read.
@@ -281,6 +299,7 @@
\begin{funcdesc}{remove}{path}
Remove the file \var{path}. See \code{rmdir} below to remove a directory.
+This is identical to the \code{unlink} function documented below.
\end{funcdesc}
\begin{funcdesc}{rename}{src\, dst}