diff --git a/poc-datacollector/modules/ROOT/pages/doc-readmongo_service.adoc b/poc-datacollector/modules/ROOT/pages/doc-readmongo_service.adoc
index a1625b2..c51111d 100644
--- a/poc-datacollector/modules/ROOT/pages/doc-readmongo_service.adoc
+++ b/poc-datacollector/modules/ROOT/pages/doc-readmongo_service.adoc
@@ -66,7 +66,9 @@ const pubClient = new Redis({
   port: REDIS_PORT,
 });
 
-// read from redis
+  // ------------------------------
+  // read from redis
+  // ------------------------------
 async function getkey(id) {
   return new Promise((resolve) => {
     pubClient.get(id, function (err, reply) {
@@ -85,7 +87,9 @@ async function getkey(id) {
   });
 }
 
-// check if stream exists
+  // ------------------------------
+  //   check if stream exists
+  // ------------------------------
 async function checkstream(data) {
   var res = await getkey(data.id);
   if (res == "1") {
@@ -106,6 +110,9 @@ async function checkstream(data) {
   }
 }
 
+  // ------------------------------
+  // --- open socket -------------
+  // ------------------------------
 io.on("connection", (s) => {
   console.error("socket connection");
   var usersession = new Object();
@@ -134,7 +141,7 @@ io.on("connection", (s) => {
   });
 
   // ------------------------------
-  // --- event
+  // --- event ----------------
   // ------------------------------
   s.on("onevent", function (data) {
     var binddata = {