[MAN] Document redirection file descriptor limitation

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

ChangeLog

diff --git a/ChangeLog b/ChangeLog
index 0799454..406e20c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 2014-11-17  Stéphane Aulery <saulery@free.fr>
 
 	* Correct typo in manual page.
+	* Document redirection file descriptor limitation.
 
 2014-10-30  Herbert Xu <herbert@gondor.apana.org.au>
 

src/dash.1

diff --git a/src/dash.1 b/src/dash.1
index 5a2770f..d782882 100644
--- a/src/dash.1
+++ b/src/dash.1
@@ -385,7 +385,7 @@
 Following is a list of the possible redirections.
 The
 .Bq n
-is an optional number, as in
+is an optional number between 0 and 9, as in
 .Sq 3
 (not
 .Sq Bq 3 ) ,