diff --git a/Documents/proto/general/openapi.yaml b/Documents/proto/general/openapi.yaml
index 5054813..4b8df80 100644
--- a/Documents/proto/general/openapi.yaml
+++ b/Documents/proto/general/openapi.yaml
@@ -57,7 +57,7 @@ paths:
         - Users
       security:
         - bearer: []
-      responses:
+      responses: 
         '200':
           description: Ok
           content:
@@ -122,11 +122,11 @@ paths:
           description: Successfully changed. 
         '401':
           $ref: '#/components/responses/UnauthorizedError'
-  /user/{mat}:
+  /user/{RegNo}:
     parameters:
-      - name: mat
+      - name: RegNo
         in: path
-        description: Matricule of the user (unique id)
+        description: Regestration number of the user (unique id)
         required: true
         schema:
           type: integer
@@ -147,6 +147,8 @@ paths:
       tags:
         - General
         - Admin
+        - Secretariat
+        - Ext (scientific articles)
       security:
         - bearer: []
       requestBody:
@@ -188,6 +190,12 @@ paths:
         '401':
           $ref: '#/components/responses/UnauthorizedError'
   /courses/{id}:
+    parameters:
+      - name: id
+        in: path
+        required: true
+        schema:
+          type: integer
     get:
       summary: see courses informations 
       tags:
@@ -200,12 +208,7 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/Course'
-    parameters:
-      - name: id
-        in: path
-        required: true
-        schema:
-          type: integer
+
     delete:
       summary: delete a course 
       tags:
@@ -241,7 +244,6 @@ paths:
                 faculty:
                   type: string
                 teachers:
-                  type: object
                   $ref: '#/components/schemas/User'
                 assistants:
                   type: array
@@ -266,7 +268,7 @@ paths:
       summary: Create a cursus
       tags:
         - General
-        - cursus
+        - Cursus
       security: 
         - bearer: []
       requestBody:
@@ -298,7 +300,7 @@ paths:
       summary: See Cursus's informations 
       tags:
         - General
-        - cursus
+        - Cursus
       responses:
         '200':
           description: OK
@@ -316,7 +318,7 @@ paths:
       summary: Delete cursus
       tags:
         - General
-        - cursus
+        - Cursus
       security: 
         - bearer: []
       responses:
@@ -328,7 +330,7 @@ paths:
       summary: Modify cursus 
       tags:
         - General
-        - cursus
+        - Cursus
       security:
         - bearer: []
       requestBody:
@@ -345,7 +347,6 @@ paths:
                 faculty:
                   type: string
                 teachers:
-                  type: object
                   $ref: '#/components/schemas/User'
                 assistants:
                   type: array
@@ -365,7 +366,416 @@ paths:
         '401':
           $ref: '#/components/responses/UnauthorizedError'
           
-    
+             
+  /lesson:
+    post:
+      summary: create a new lesson
+      tags:
+        - Secretariat
+        - Lesson
+        - Ext (Schedule)
+      security: 
+        - bearer: []
+      requestBody:
+        required: true
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                date:
+                  type: string
+                  description: Follow the iso 8601 ("YYYY-MM-DD")
+                CourseId:
+                  type: integer
+                duration:
+                  type: number
+                classroom:
+                  type: string
+      responses:
+        '201':
+          description: Lesson created 
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
+  /lesson/{id}:
+    parameters:
+      - name: id
+        in: path
+        required: true
+        schema:
+          type: integer
+    get:
+      summary : See lesson's informations
+      tags:
+        - Users
+        - Lesson
+        - Ext (Schedule)
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Lesson'
+    patch:
+      summary : Modify Lesson
+      tags:
+        - Secretariat
+        - Lesson
+        - Ext (Schedule)
+      security:
+        - bearer: []
+      requestBody:
+        required: true
+        content:
+          application/x-www-form-urlencoded:
+             schema:
+              type: object
+              properties:
+                date:
+                  type: string
+                  description: Follow the iso 8601 ("YYYY-MM-DD")
+                IDcourse:
+                  type: integer
+                duration:
+                  type: number
+                classroom:
+                  type: string
+      responses:
+        '201':
+          description: Lesson modified
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
+          
+    delete:
+      summary: Delete lesson
+      tags:
+        - Lesson
+        - Secretariat
+        - Ext (Schedule)
+      security: 
+        - bearer: []
+      responses:
+        '201':
+          description: Success
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
+  /scheduleRequest:
+    post:
+      summary: Create a new request
+      tags:
+        - Teacher
+        - ScheduleRequest
+        - Ext (Schedule)
+      requestBody:
+        required: true
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                requestType:
+                  type: string
+                lessonId:
+                  type: integer
+                newDate:
+                  type: string
+                  description: Follow the iso 8601 ("YYYY-MM-DD")
+                newClassroom:
+                  type: string
+                newCourseId:
+                  type: integer
+      responses:
+        '201':
+          description: Request created 
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
+
+  /scheduleRequest/{id}:
+    parameters:
+      - name: id
+        in: path
+        required: true
+        schema:
+          type: integer
+    get:
+      summary : See request information
+      tags:
+        - Teacher
+        - Secretariat
+        - ScheduleRequest
+        - Ext (Schedule)
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ScheduleRequest'
+    patch:
+      summary : Modify request
+      tags:
+        - Teacher
+        - ScheduleRequest
+        - Ext (Schedule)
+      requestBody:
+        required: true
+        content:
+          application/x-www-form-urlencoded:
+             schema:
+              type: object
+              properties:
+                newDate:
+                  type: string
+                newClassroom:
+                  type: string
+                newCourseId:
+                  type: integer
+      responses:
+        '201':
+          description: Request modified
+    delete:
+      summary: Delete request
+      tags:
+        - Teacher
+        - Secretariat
+        - ScheduleRequest
+        - Ext (Schedule)
+      responses:
+        '201':
+          description: Success
+  
+  /display:
+    post:
+        summary: Create a new display
+        tags:
+          - Display
+          - Ext (Schedule)
+        requestBody:
+          required: true
+          content:
+            application/x-www-form-urlencoded:
+              schema:
+                type: object
+                properties:
+                  timeMode:
+                    type: string
+                  displayMode:
+                    type: string
+                  userId:
+                    type: integer
+        responses:
+          '201':
+            description: display created 
+          
+  /display/{id}:
+    parameters:
+        - name: id
+          in: path
+          required: true
+          schema:
+            type: integer
+    get:
+      summary : See display information
+      tags:
+        - Users
+        - Display
+        - Ext (Schedule)
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Display'
+    patch:
+      summary : Modify display
+      tags:
+        - Users
+        - Display
+        - Ext (Schedule)
+      requestBody:
+        required: true
+        content:
+          application/x-www-form-urlencoded:
+             schema:
+              type: object
+              properties:
+                  timeMode:
+                    type: string
+                  displayMode:
+                    type: string
+      responses:
+        '201':
+          description: Display modified
+ # Extension publication scientifique 
+
+  /article:
+    post:
+      summary: create an article
+      tags:
+        - Ext (scientific articles)
+        - Researcher
+      security:
+        - bearer : []
+      responses:
+        "201" : 
+          description: OK
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
+      requestBody:
+        required : true
+        content: 
+          application/json:
+            schema:
+              type: object
+              properties:
+                pdf:
+                  type: string 
+                  description : the B64 version encoding of the pdf file
+                access:
+                  type: string
+                summary:
+                  type: string
+                language:
+                  type: string
+                title:
+                  type: string
+                date:
+                  type: string
+                  description: Follow the iso 8601 ("YYYY-MM-DD")
+                views:
+                  type: integer 
+            example:
+                    {
+        "access": "private",
+        "pdf": " *the b64 encoding of the pdf* ",
+        "summary": "looks in details about graph's second theorem",
+        "language": "english",
+        "title": "graph's second theorem study",
+        "date":"2023-02-01",
+        "views": 420,
+        "authors" : []
+        }
+  /article/{id}:
+    parameters:
+      - name: id
+        in: path
+        required: true
+        schema:
+          type: integer
+    get:
+      summary: get a certain article
+      tags:
+        - Users
+        - Ext (scientific articles)
+      security:
+        - bearer: []
+      responses:
+        "201": 
+          description: OK
+          content:  
+            application/json:
+                schema:
+                  $ref: '#/components/schemas/Article'
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
+          
+    patch:
+      summary: modify an article
+      tags:
+        - Researcher
+        - Ext (scientific articles)
+      security:
+        - bearer : []
+      responses:
+        "201": 
+          description: article modifié
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
+      requestBody:
+        required : true
+        content: 
+          application/json:
+            schema:
+              type: object
+              properties:
+                pdf:
+                  type: string 
+                  description : the B64 version encoding of the pdf file
+                access:
+                  type: string
+                summary:
+                  type: string
+                language:
+                  type: string
+                title:
+                  type: string
+                date:
+                  type: string
+                  description: Follow the iso 8601 ("YYYY-MM-DD")
+                views:
+                  type: integer
+              example:
+                                  {
+        "access": "public",
+        "pdf": " *the new b64 encoding of the pdf* ",
+        "summary": "looks in details about the duck's algorithm problem",
+        "language": "english",
+        "title": "duck's algorithm problem solving",
+        "date":"2023-02-01",
+        "views": 10,
+        "authors" : []
+        }
+              
+
+    delete:
+      summary: delete own article
+      tags:
+        - Researcher
+        - Ext (scientific articles)
+      security: 
+        - bearer: []
+      responses:
+        '201':
+          description: OK
+        '401':
+          $ref: '#/components/responses/UnauthorizedError'
+      
+  /DisplayArticle:
+      parameters:
+        - in: query
+          name: author
+          required: false 
+          schema:
+            type: string
+        - in: query
+          name: access
+          required: false 
+          schema:
+            type: string
+            enum: [public, restricted, private]
+        - in: query
+          name: name
+          required: false 
+          schema:
+            type: string
+            
+      get:
+        summary: get a list of article's data
+        tags:
+          - Users
+          - Ext (scientific articles)
+        responses: 
+          '200':
+            description: OK
+            content: 
+              application/json:
+                schema:
+                  type: array
+                  items:
+                    $ref: "#/components/schemas/DisplayArticle"
+
 components:
   securitySchemes:
     bearer:
@@ -459,6 +869,142 @@ components:
         "id": 42,
         "courses": ['Math', 'Info']
         }
+    Article:
+      type: object
+      properties:
+        articleId: 
+          type: integer
+        access :
+          type : string
+        pdf :
+          type : string
+          description : file location
+        summary:
+          type : string
+        language:
+          type : string
+        title :
+          type : string 
+        date: 
+          type : string
+        views :
+          type : integer
+        authors:
+          type: array
+          items:
+            $ref: '#/components/schemas/User'
+          description: first user is the author, the remaining users are co-authors
+      example:
+        {
+        "articleId": 42,
+        "access": "private",
+        "pdf": "/articles/42",
+        "summary": "looks in details about graph's second theorem",
+        "language": "english",
+        "title": "graph's second theorem study",
+        "date":"2023-02-01",
+        "views": 420,
+        "authors" : []
+        }
+    DisplayArticle:   
+      type: object
+      properties:
+        articleId: 
+          type: integer
+        access:
+          type: string
+        summary:
+          type: string
+        title:
+          type: string 
+        author:
+          type: string
+          items:
+            $ref: '#/components/schemas/User'
+      example:
+        {
+        "articleId": 42,
+        "access": "private",
+        "summary": "looks in details about graph's second theorem",
+        "title": "graph's second theorem study",
+        "author" : "john doe"
+        }
+    Lesson :
+      type: object
+      properties:
+        id:
+          type: integer
+        date:
+          type: string
+          description: Follow the iso 8601 ("YYYY-MM-DD")
+        duration:
+          type: number
+          description: duration of a course in hours
+        classroom:
+          type: string
+        courseId:
+          type: integer
+      example:
+          {
+            "id": 12,
+            "date": "2023-12-01",
+            "duration": 1.5,
+            "classroom": "AMPHI01",
+            "courseId": 12
+          }
+    ScheduleRequest:
+      type: object
+      properties:
+        id:
+          type: integer
+        requestType:
+          type: string
+        lessonId:
+          type: integer
+        teacherId:
+          type: integer
+        newDate:
+          type: string
+          description: Follow the iso 8601 ("YYYY-MM-DD")
+        newClassroom:
+          type: string
+        newCourseId:
+          type: integer
+      example:
+        {
+          "id": 12,
+          "requestType": "moveLesson",
+          "lessonId": 52,
+          "teacherId": 12,
+          "newDate": "2023-12-20",
+          "newClassroom":,
+          "newCourseId":,
+        }
+    
+    Display:
+      type: object
+      properties:
+        id:
+          type: integer
+        timeMode:
+          type: string
+          description: Define the period displayed on the schedule (week,month,quadrimester..)
+        displayMode:
+          type: string
+        userId:
+          type: integer
+          description: Id of the user who owns this display
+      example:
+        {
+          "id": 12,
+          "timeMode": "month",
+          "displayMode": "grid",
+          "UserId": 12
+        }
   responses:
     UnauthorizedError:
       description: Unauthorized access or missing bearer 
+
+
+
+