diff --git a/README.md b/README.md
index ecad290..651bfd1 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # init.sh
-**init.sh** is an automated configurator for system administrator. It's fully
+**init.sh** is an automated configurator for system administrators. It's fully
 written using Bash scripting and aims to be platform independent. Nevertheless,
 it's requirements turns it naturally to Linux systems. It have long been tested
 using Debian GNU/Linux, Devuan and different flavor of Ubuntu.
diff --git a/doc/dev.md b/doc/dev.md
index 5f14ffb..330eb63 100644
--- a/doc/dev.md
+++ b/doc/dev.md
@@ -1 +1,12 @@
-A faire.
+# init.sh developper's reference
+
+## Getting started
+This is a programmer reference. It's not intended to be a manual, be a reference
+for all internal functions, so you can easily build your own modules. This
+suppose you already read the [Readme file](../README.md). Creating modules
+will also requires some good knowledge of Bash programming.
+
+## The aaa_error.sh file
+### Functions
+#### check_root
+
diff --git a/lib/aaa_errors.sh b/lib/aaa_errors.sh
index 07a78b4..d142939 100644
--- a/lib/aaa_errors.sh
+++ b/lib/aaa_errors.sh
@@ -9,7 +9,7 @@
 # ------------------------------------------------------------------------------
  
 
- # ------------------------------------------------------------------------------
+# ------------------------------------------------------------------------------
 # Exit with error
 function die()
 {