weston.man: Document the way to disable idle timeout

diff --git a/man/weston.man b/man/weston.man
index e7692c7..39d854b 100644 (file)
--- a/man/weston.man
+++ b/man/weston.man
@@ -117,6 +117,7 @@ seconds. The default timeout is 300 seconds. When there has not been any
 user input for the idle timeout, Weston enters an inactive mode. The
 screen fades to black, and depending on the shell in use, a screensaver
 may activate, monitors may switch off, and the shell may lock the session.
+A value of 0 effectively disables the timeout.
 .TP
 \fB\-\-log\fR=\fIfile.log\fR
 Append log messages to the file