diff --git a/orgas/README.md b/orgas/README.md
index f5e49e0..8b379ad 100644
--- a/orgas/README.md
+++ b/orgas/README.md
@@ -2,10 +2,18 @@
 
 *datagraph_generator* generates a diagram with **graphviz** with the link between organisations, libraries and users in *rero-ils* project.
 
+# Requirements
+
+  * graphviz
+  * [jq](https://stedolan.github.io/jq/)
+
 # Usage
 
+  * Open **gen.sh** file
+  * change **RERO\_DIR** variable to point your **rero-ils directory**
+
 ```
 make clean && make
 ```
 
-Result: **datagraph.svg** file (can be open with Gimp for example).
+Result: **organisations.svg** file (can be open with Gimp for example).
diff --git a/orgas/gen.sh b/orgas/gen.sh
index d86533b..93e9cba 100755
--- a/orgas/gen.sh
+++ b/orgas/gen.sh
@@ -1,15 +1,20 @@
 #!/usr/bin/env bash
+#
+# Generate a dot file to create graph of RERO-ils data (orga, lib and users)
+#
 
-# Generate a dot file to create digraph of RERO-ils data
+RERO_DIR="${HOME}/projets/rero/rero-ils"
 
 output="$1"
-source="/home/od/projets/rero/rero-ils/data/"
+SRC_DIR="${RERO_DIR}/data/"
 
 # start of file
 echo "digraph {" > "$output"
+echo "rankdir = RL;" >> "$output"
+echo "label = \"Link between organisations, libraries and users.\";" >> "$output"
 
 # ORGANISATIONS
-orga_file="${source}organisations.json"
+orga_file="${SRC_DIR}organisations.json"
 cat "${orga_file}"|jq -c '.[] | { 
   name,
   pid,
@@ -20,28 +25,30 @@ do
   code=$(echo $orga|jq -r .code)
   name=$(echo $orga|jq -r .name)
   # write result in output
-  echo "Orga${pid} [label=\"${name}\"]" >> "$output"
+  echo "Orga${pid} [shape=box color=\"transparent\" style=filled fillcolor=\"#bcafff\" label=<${name}<br/>(code: ${code})>]" >> "$output"
 done
 
 # LIBRARIES
-lib_file="${source}libraries.json"
+lib_file="${SRC_DIR}libraries.json"
 cat "${lib_file}"|jq -c '.[] | {
   name,
   pid,
+  code,
   organisation: .organisation."$ref"}'|while read lib
 do
   pid=$(echo $lib|jq -r .pid)
   name=$(echo $lib|jq -r .name)
+  code=$(echo $lib|jq -r .code)
   orga=$(echo $lib|jq -r .organisation)
   orga_pid=$(echo $orga|rev|cut -d "/" -f 1|rev)
   # write result in output
   l_id="Lib${pid}"
-  echo "${l_id} [label=\"${name}\"]" >> "$output"
+  echo "${l_id} [shape=house color=transparent style=filled fillcolor=\"#49afff\" label=<${name}<br/>(code: ${code})>]" >> "$output"
   echo "${l_id} -> Orga${orga_pid}" >> "$output"
 done
 
 # USERS
-user_file="${source}users.json"
+user_file="${SRC_DIR}users.json"
 cat "${user_file}"|jq -c '.[] | {
   email,
   first_name,
@@ -55,7 +62,7 @@ do
   library_pid=$(echo $library|rev|cut -d "/" -f 1|rev)
   # write result in output
   u_id="User_${email}"
-  echo "\"${u_id}\" [label=\"${first_name} ${last_name}\"]" >> "$output"
+  echo "\"${u_id}\" [label=<${first_name} ${last_name}<br/>${email}>]" >> "$output"
   echo "\"${u_id}\" -> Lib${library_pid}" >> "$output"
 done