diff --git a/doc/dev.md b/doc/dev.md
index c51a304..34499cd 100644
--- a/doc/dev.md
+++ b/doc/dev.md
@@ -12,8 +12,9 @@
 - [3. The display.sh file](#3-the-displaysh-file)
   - [3.1. Functions](#31-functions)
     - [3.1.1. ```prnt [-n] [I|W|E|m] <message>```](#311-prnt--n-iwem-message)
-    - [3.1.2. ```dsleep <miliseconds> [char]```](#312-dsleep-miliseconds-char)
-    - [3.1.3. ```dump_key_buffer```](#313-dump_key_buffer)
+    - [3.1.2. ```separator```](#312-separator)
+    - [3.1.3. ```dsleep <miliseconds> [char]```](#313-dsleep-miliseconds-char)
+    - [3.1.4. ```dump_key_buffer```](#314-dump_key_buffer)
   - [3.2. Other functionalities](#32-other-functionalities)
 - [4. The filefct.sh file](#4-the-filefctsh-file)
   - [4.1. Common behavior](#41-common-behavior)
@@ -145,7 +146,13 @@ Consequently that function can only contain code that cannot trigger errors or
 fail as it's also used to display errors. Thus it only contains echoes and some
 variables manipulation.
 
-#### 3.1.2. ```dsleep <miliseconds> [char]```
+#### 3.1.2. ```separator```
+Tat function display a seprator made with dash, to fill the length of the
+screen minus one character.
+
+It takes no parameters and return no value.
+
+#### 3.1.3. ```dsleep <miliseconds> [char]```
 That function is an equivalent to *sleep* bash command but will display a
 countdown every second until it reaches zero. Optionnally a character (or a
 string) can be given as a second parameter to replace the countdown by that
@@ -154,7 +161,7 @@ the wait is over.
 
 The function returns nothing useful.
 
-#### 3.1.3. ```dump_key_buffer```
+#### 3.1.4. ```dump_key_buffer```
 That function dumps keyboard's buffer. It's used to clear eventual key press
 before any critical keyboard action.