diff --git a/ChangeLog b/ChangeLog
index 59dd5cad7cc..47627eff536 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6041,4 +6041,5 @@
* arch/arm/src/sama5/sam_ssc.c: I2S loopback test finally works
(2013-11-11).
* fs/procfs: Add a little, primitive procfs file system. (2013-11-13).
+ * fs/binfs/README.txt: Add a README file for binfs (2013-11-13).
diff --git a/Documentation/README.html b/Documentation/README.html
index e2623d272e4..de8634ed816 100644
--- a/Documentation/README.html
+++ b/Documentation/README.html
@@ -8,7 +8,7 @@
NuttX README Files
- Last Updated: November 7, 2013
+ Last Updated: November 13, 2013
|
@@ -231,6 +231,8 @@
| | | `- README.txt
| | `- README.txt
| |- fs/
+ | | |- binfs/
+ | | | `- README.txt
| | |- mmap/
| | | `- README.txt
| | |- nxffs/
diff --git a/README.txt b/README.txt
index d9df9a3a3f3..c6fdfeebe84 100644
--- a/README.txt
+++ b/README.txt
@@ -1159,6 +1159,8 @@ nuttx
| | `- README.txt
| `- README.txt
|- fs/
+ | |- binfs/
+ | | `- README.txt
| |- mmap/
| | `- README.txt
| |- nxffs/
diff --git a/fs/binfs/README.txt b/fs/binfs/README.txt
new file mode 100755
index 00000000000..ea5e862f4a3
--- /dev/null
+++ b/fs/binfs/README.txt
@@ -0,0 +1,29 @@
+fs/binfs README
+================
+
+ This is the binfs file system that allows "fake" execution of NSH built-
+ in applications via the file system. The binfs fs file system can be
+ built into the system by enabling:
+
+ CONFIG_BUILTIN=y
+ CONFIG_FS_BINFS=y
+
+ It can then be mounted from the NSH command like like:
+
+ mount -t binfs /bin
+
+Example
+=======
+
+ NuttShell (NSH) NuttX-6.31
+ nsh> hello
+ nsh: hello: command not found
+
+ nsh> mount -t binfs /bin
+ nsh> ls /bin
+ ls /bin
+ /bin:
+ hello
+
+ nsh> /bin/hello
+ Hello, World!!
diff --git a/fs/procfs/README.txt b/fs/procfs/README.txt
index 87b88a330da..ffa3eddfc16 100755
--- a/fs/procfs/README.txt
+++ b/fs/procfs/README.txt
@@ -46,5 +46,6 @@ Example
0/
1/
2/
+
nsh> cat /proc/2/cmdline
0x527420