diff --git a/nshlib/README.txt b/nshlib/README.txt
index 8cd68baac..082d8dcc6 100644
--- a/nshlib/README.txt
+++ b/nshlib/README.txt
@@ -1039,6 +1039,19 @@ NSH-Specific Configuration Settings
   The behavior of NSH can be modified with the following settings in
   the configs/<board-name>/defconfig file:
 
+  * CONFIG_NSH_READLINE
+      Selects the minimal implementation of readline().  This minimal
+      implementation provides on backspace for command line editing.
+
+  * CONFIG_NSH_CLE
+      Selects the more extensive, EMACS-like command line editor.
+      Select this option only if (1) you don't mind a modest increase
+      in the FLASH footprint, and (2) you work with a terminal that
+      support VT100 editing commands.
+
+      Selecting this option will add probably 1.5-2KB to the FLASH
+      footprint.
+
   * CONFIG_NSH_BUILTIN_APPS
       Support external registered, "builtin" applications that can be
       executed from the NSH command line (see apps/README.txt for
diff --git a/system/cle/cle.c b/system/cle/cle.c
index e0b15151e..02c5efbd6 100644
--- a/system/cle/cle.c
+++ b/system/cle/cle.c
@@ -142,7 +142,7 @@ enum cle_key_e
 {
   KEY_BEGINLINE   = CTRL('A'),  /* Move cursor to start of current line */
   KEY_LEFT        = CTRL('B'),  /* Move left one character */
-  KEY_DEL         = CTRL('D'),  /* Delete a single character at the cursor position*/
+  KEY_DEL         = CTRL('D'),  /* Delete a single character at the cursor position */
   KEY_ENDLINE     = CTRL('E'),  /* Move cursor to end of current line */
   KEY_RIGHT       = CTRL('F'),  /* Move right one character */
   KEY_DELLEFT     = CTRL('H'),  /* Delete character, left (backspace)  */