diff --git a/src/Grafoscopio-Utils/GrafoscopioUtils.class.st b/src/Grafoscopio-Utils/GrafoscopioUtils.class.st
index e162ed0..68de372 100644
--- a/src/Grafoscopio-Utils/GrafoscopioUtils.class.st
+++ b/src/Grafoscopio-Utils/GrafoscopioUtils.class.st
@@ -91,6 +91,16 @@ GrafoscopioUtils class >> getContentsFrom: url withMessage: aString [
 	^ client contents.
 ]
 
+{ #category : #persistence }
+GrafoscopioUtils class >> joinLinesFor: aCollection [
+	
+	| joinedLines |
+	
+	joinedLines := WriteStream on: ''.
+	aCollection do: [ :line | joinedLines nextPutAll: line; crlf ].
+	^ joinedLines contents
+]
+
 { #category : #utilities }
 GrafoscopioUtils class >> perform: aString on: anObject [
 
diff --git a/src/Grafoscopio-Utils/Markdeep.class.st b/src/Grafoscopio-Utils/Markdeep.class.st
index e5f0fa2..10d69f6 100644
--- a/src/Grafoscopio-Utils/Markdeep.class.st
+++ b/src/Grafoscopio-Utils/Markdeep.class.st
@@ -6,6 +6,7 @@ Class {
 	#superclass : #Object,
 	#instVars : [
 		'tocStyle',
+		'comments',
 		'header',
 		'tail',
 		'body',
@@ -30,14 +31,54 @@ Markdeep >> body: anObject [
 	body := anObject
 ]
 
+{ #category : #accessing }
+Markdeep >> comments [
+	^ comments ifNil: [  ^ comments := true ]
+]
+
+{ #category : #accessing }
+Markdeep >> comments: aBoolean [
+	"I tell if comments are enabled by default or not."
+	comments := aBoolean 
+]
+
+{ #category : #utilities }
+Markdeep >> commentsProvider [
+	"I return the url of the default service that provides annotation support.
+	I am used to add such support in the contents of the Markdeep page."
+	 ^ 'https://hypothes.is'
+]
+
+{ #category : #utilities }
+Markdeep >> commentsProviderStrings [
+	"I associate a comments service provider with the string that is required to be added
+	to the document to enable such provider."
+	| providers | 
+	providers := Dictionary new.
+	providers at: 'https://hypothes.is' put:  '<!-- Hypothesis -->
+<script src="https://hypothes.is/embed.js" async></script>'.
+	^ providers
+	
+	
+]
+
+{ #category : #utilities }
+Markdeep >> commentsSupport [
+	"I enable comments of the page."
+
+	self comments ifFalse: [ ^ self ].
+	^ self commentsProviderStrings at: self commentsProvider 
+]
+
 { #category : #'instance creation' }
 Markdeep >> contents [
 	| output |
 	output := '' writeStream.
 	output 
 		nextPutAll: self header; crlf;
-		nextPutAll:	(self body); crlf;
-		nextPutAll: self tail.
+		nextPutAll:	self body; crlf;
+		nextPutAll: self tail; crlf; crlf; 
+		nextPutAll: self commentsSupport.
 	^ output contents.
 ]