update manual

diff --git a/doc/manual.lyx b/doc/manual.lyx
index 5badcd3deec1f282b211b158458a587c60822b60..21eb0e144dcdbcd6c4bb13964d1399032634e6c5 100644 (file)
--- a/doc/manual.lyx
+++ b/doc/manual.lyx
@@ -1,4 +1,4 @@
-#LyX 1.6.2 created this file. For more info see http://www.lyx.org/
+#LyX 1.6.1 created this file. For more info see http://www.lyx.org/
 \lyxformat 345
 \begin_document
 \begin_header
@@ -1178,5 +1178,29 @@ floats between c types and trace types.
 or from float to double is also not supported.
 \end_layout
 
+\begin_layout Section
+Environment variables
+\end_layout
+
+\begin_layout Standard
+The following environment variables change the behavior of libust.
+\end_layout
+
+\begin_layout Description
+UST_TRACE When defined, automatically enables tracing.
+\end_layout
+
+\begin_layout Description
+UST_AUTOPROBE When value is 1, enable all markers automatically.
+ When value is a regular expression, enable all markers whose name matches
+ the regular expression.
+\end_layout
+
+\begin_layout Description
+UST_DAEMON_SOCKET If not set, the default location of the daemon socket
+ is used.
+ If set, the value is used as path to the ustd socket.
+\end_layout
+
 \end_body
 \end_document