diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index a62802f..f7d0882 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -1978,6 +1978,7 @@ dependencies = [
  "tauri",
  "tauri-build",
  "ts-rs",
+ "uuid",
  "x11rb",
 ]
 
@@ -3880,11 +3881,12 @@ checksum = "09cc8ee72d2a9becf2f2febe0205bbed8fc6615b7cb429ad062dc7b7ddd036a9"
 
 [[package]]
 name = "uuid"
-version = "1.4.1"
+version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "79daa5ed5740825c40b389c5e50312b9c86df53fccd33f281df655642b43869d"
+checksum = "5e395fcf16a7a3d8127ec99782007af141946b4795001f876d54fb0d55978560"
 dependencies = [
  "getrandom 0.2.10",
+ "serde",
 ]
 
 [[package]]
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 0210b23..dfa59c6 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -38,6 +38,7 @@ directories = "5.0.1"
 notify = "6.0.1"
 regex = "1.9.3"
 lazy_static = "1.4.0"
+uuid = { version = "1.6.1", features = ["v4", "serde"] }
 
 [features]
 # this feature is used for production builds or when `devPath` points to the filesystem
diff --git a/src-tauri/src/plan.rs b/src-tauri/src/plan.rs
index 7b9d56c..c46d9a8 100644
--- a/src-tauri/src/plan.rs
+++ b/src-tauri/src/plan.rs
@@ -18,6 +18,22 @@ impl Plan {
 pub struct PlanElement {
     area_key: String,
     notes: String,
+    
+    #[serde(default = "PlanElement::generate_uuid")]
+    uuid: uuid::Uuid,
+
+    #[serde(default = "PlanElement::edited")]
+    edited: bool,
+}
+
+impl PlanElement {
+    pub fn generate_uuid() -> uuid::Uuid {
+        uuid::Uuid::new_v4()
+    }
+
+    pub fn edited() -> bool {
+        false
+    }
 }
 
 #[derive(Debug, Deserialize)]
@@ -58,6 +74,8 @@ pub fn convert_old(path: &str) -> Option<Plan> {
             .map(|plan_element| PlanElement {
                 area_key: map[&plan_element.area._rid].to_owned(),
                 notes: plan_element.note,
+                uuid: PlanElement::generate_uuid(),
+                edited: PlanElement::edited(),
             })
             .collect::<Vec<PlanElement>>(),
             stored_path: None
diff --git a/src/app/_models/plan.ts b/src/app/_models/plan.ts
index f2f5637..3117c5a 100644
--- a/src/app/_models/plan.ts
+++ b/src/app/_models/plan.ts
@@ -68,4 +68,6 @@ export class Plan {
 export interface PlanElement {
     area_key: string;
     notes?: string;
+    uuid?: string;
+    edited: boolean;
 }
\ No newline at end of file
diff --git a/src/app/_services/plan.service.ts b/src/app/_services/plan.service.ts
index bc1833b..538ddb1 100644
--- a/src/app/_services/plan.service.ts
+++ b/src/app/_services/plan.service.ts
@@ -1,6 +1,6 @@
 import { Injectable } from '@angular/core';
 import { invoke } from '@tauri-apps/api';
-import { from, map, tap } from 'rxjs';
+import { Observable, ReplaySubject, Subject, from, map, tap } from 'rxjs';
 import { Plan, PlanInterface } from '../_models/plan';
 
 @Injectable({
@@ -10,9 +10,14 @@ export class PlanService {
 
   currentPlan?: Plan;
   planStore: string[] = [];
+  basePlan?: Plan;
+  private basePlanSubj: Subject<Plan> = new ReplaySubject<Plan>(1);
+
+  
 
   constructor() {
     this.getPreviousPlans();
+    this.loadBasePlan();
   }
 
   loadPlan(path: string) {
@@ -34,8 +39,18 @@ export class PlanService {
     );
   }
 
+  
+
   loadBasePlan() {
-    return from(invoke<PlanInterface>('base_plan'));
+    if(!this.basePlan) {
+      from(invoke<PlanInterface>('base_plan')).subscribe(plan => {
+        plan.plan.forEach(elem => {elem.edited = false;});
+        this.basePlan = new Plan(plan);
+        this.basePlanSubj?.next(this.basePlan);
+      });
+    }
+
+    return this.basePlanSubj!.asObservable();
   }
 
   savePlan(path: string, plan: Plan) {
@@ -64,4 +79,12 @@ export class PlanService {
       this.currentPlan.setPrevious(name);
     }));
   }
+
+  zoneFromUuid(uuid: string) {
+    if (!this.basePlan) {
+      return undefined;
+    }
+
+    return this.basePlan.plan.find(elem => elem.uuid === uuid);
+  }
 }
diff --git a/src/app/editor/editor.component.ts b/src/app/editor/editor.component.ts
index 4a4d365..979ced1 100644
--- a/src/app/editor/editor.component.ts
+++ b/src/app/editor/editor.component.ts
@@ -143,6 +143,8 @@ export class EditorComponent implements OnInit {
     return {
       area_key: area.named_id,
       notes: undefined,
+      uuid: undefined,
+      edited: false
     };
   }
 
@@ -254,6 +256,7 @@ export class EditorComponent implements OnInit {
     dialogRef.afterClosed().subscribe(note => {
       if(note) {
         item.notes = note;
+        item.edited = true;
       }
     })