diff --git a/README.md b/README.md
index a3d003d..e413c05 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,9 @@ An svg layout designer.
 Requierements :
 - NodeJS
 - npm
-- pnpm (optional but recommanded unless you prefer having a huge `node_modules` directory)
 - Chrome > 98
+- pnpm (optional but recommanded unless you prefer having a huge `node_modules` directory)
+- [`git-lfs`](https://git-lfs.github.com/) (in order to clone the documentation)
 
 # Developping
 
@@ -22,9 +23,6 @@ Run `npm ci`
 
 Run `npm run dev`
 
-
-
-
 # Deploy
 
 Run `npm ci`
@@ -72,4 +70,35 @@ bun run http.js
 
 The web server will be running at `http://localhost:5000`
 
-Configure the file `.env.development` with the url
\ No newline at end of file
+Configure the file `.env.development` with the url
+
+# Recommanded tools
+
+- [VSCode](https://code.visualstudio.com/)
+- [React DevTools](https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi)
+- [vscode-tailwindcss](https://marketplace.visualstudio.com/items?itemName=bradlc.vscode-tailwindcss)
+- [vscode-eslint](https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint)
+
+# Setup debuggin with chrome
+
+Inside `.vscode/settings.json`, set the following :
+
+```json
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "type": "chrome",
+      "request": "launch",
+      "name": "Launch Chrome against localhost",
+      "url": "http://localhost:5173",
+      "webRoot": "${workspaceFolder}",
+    }
+  ]
+}
+```
+
+Change the `url` to the dev server url. Set the `runtimeExecutable` to you favorite chromium browser.
\ No newline at end of file
diff --git a/src/Components/API/api.ts b/src/Components/API/api.ts
index 510428d..6a43c72 100644
--- a/src/Components/API/api.ts
+++ b/src/Components/API/api.ts
@@ -1,5 +1,4 @@
 import { IConfiguration } from '../../Interfaces/IConfiguration';
-import { IHistoryState } from '../../Interfaces/IHistoryState';
 import { ISetContainerListRequest } from '../../Interfaces/ISetContainerListRequest';
 import { ISetContainerListResponse } from '../../Interfaces/ISetContainerListResponse';
 import { GetCircularReplacer } from '../../utils/saveload';
@@ -43,6 +42,7 @@ export async function SetContainerList(request: ISetContainerListRequest): Promi
     return await fetch(url, {
       method: 'POST',
       headers: new Headers({
+        // eslint-disable-next-line @typescript-eslint/naming-convention
         'Content-Type': 'application/json'
       }),
       body: dataParsed
diff --git a/src/Components/App/App.scss b/src/Components/App/App.scss
deleted file mode 100644
index e69de29..0000000
diff --git a/src/Components/App/App.tsx b/src/Components/App/App.tsx
index b0a2374..3b1771b 100644
--- a/src/Components/App/App.tsx
+++ b/src/Components/App/App.tsx
@@ -1,5 +1,4 @@
 import React, { Dispatch, SetStateAction, useEffect, useState } from 'react';
-import './App.scss';
 import { MainMenu } from '../MainMenu/MainMenu';
 import { ContainerModel } from '../../Interfaces/IContainerModel';
 import { Editor } from '../Editor/Editor';
@@ -78,7 +77,7 @@ export function App(props: IAppProps): JSX.Element {
   }
 
   return (
-    <div className='bg-blue-100 h-full w-full'>
+    <div className='mainmenu-bg'>
       <MainMenu
         newEditor={() => NewEditor(
           setEditorState, setLoaded
diff --git a/src/Components/Bar/Bar.tsx b/src/Components/Bar/Bar.tsx
index a8ed605..7125f30 100644
--- a/src/Components/Bar/Bar.tsx
+++ b/src/Components/Bar/Bar.tsx
@@ -16,7 +16,7 @@ export const BAR_WIDTH = 64; // 4rem
 
 export function Bar(props: IBarProps): JSX.Element {
   return (
-    <div className='fixed z-20 flex flex-col top-0 left-0 h-full w-16 bg-slate-100'>
+    <div className='bar'>
       <BarIcon
         isActive={props.isSidebarOpen}
         title='Components'
diff --git a/src/Components/ContainerProperties/ContainerForm.tsx b/src/Components/ContainerProperties/ContainerForm.tsx
index b427484..88ebaf7 100644
--- a/src/Components/ContainerProperties/ContainerForm.tsx
+++ b/src/Components/ContainerProperties/ContainerForm.tsx
@@ -4,6 +4,7 @@ import { PropertyType } from '../../Enums/PropertyType';
 import { XPositionReference } from '../../Enums/XPositionReference';
 import { IContainerProperties } from '../../Interfaces/IContainerProperties';
 import { ISymbolModel } from '../../Interfaces/ISymbolModel';
+import { SHOW_BORROWER_DIMENSIONS, SHOW_CHILDREN_DIMENSIONS, SHOW_SELF_DIMENSIONS } from '../../utils/default';
 import { ApplyWidthMargin, ApplyXMargin, RemoveWidthMargin, RemoveXMargin, RestoreX, TransformX } from '../../utils/svg';
 import { InputGroup } from '../InputGroup/InputGroup';
 import { RadioGroupButtons } from '../RadioGroupButtons/RadioGroupButtons';
@@ -34,7 +35,7 @@ function GetCSSInputs(properties: IContainerProperties,
 
 export function ContainerForm(props: IContainerFormProps): JSX.Element {
   return (
-    <div className='grid grid-cols-2 gap-y-4'>
+    <div className='grid grid-cols-2 gap-y-4 items-center'>
       <InputGroup
         labelText='Name'
         inputKey='id'
@@ -228,6 +229,49 @@ export function ContainerForm(props: IContainerFormProps): JSX.Element {
         value={props.properties.linkedSymbolId ?? ''}
         onChange={(event) => props.onChange('linkedSymbolId', event.target.value)} />
       {GetCSSInputs(props.properties, props.onChange)}
+      {
+        SHOW_SELF_DIMENSIONS &&
+        <InputGroup
+          labelText='Show dimension'
+          inputKey='showSelfDimensions'
+          labelClassName=''
+          inputClassName=''
+          type='checkbox'
+          checked={props.properties.showSelfDimensions}
+          onChange={(event) => props.onChange('showSelfDimensions', event.target.checked)} />
+      }
+      {
+        SHOW_CHILDREN_DIMENSIONS &&
+        <InputGroup
+          labelText='Show overall dimension of its children'
+          inputKey='showChildrenDimensions'
+          labelClassName=''
+          inputClassName=''
+          type='checkbox'
+          checked={props.properties.showChildrenDimensions}
+          onChange={(event) => props.onChange('showChildrenDimensions', event.target.checked)} />
+      }
+      {
+        SHOW_BORROWER_DIMENSIONS &&
+      <>
+        <InputGroup
+          labelText='Mark the position'
+          inputKey='markPositionToDimensionBorrower'
+          labelClassName=''
+          inputClassName=''
+          type='checkbox'
+          checked={props.properties.markPositionToDimensionBorrower}
+          onChange={(event) => props.onChange('markPositionToDimensionBorrower', event.target.checked)} />
+        <InputGroup
+          labelText='Show dimension with marked children'
+          inputKey='isDimensionBorrower'
+          labelClassName=''
+          inputClassName=''
+          type='checkbox'
+          checked={props.properties.isDimensionBorrower}
+          onChange={(event) => props.onChange('isDimensionBorrower', event.target.checked)} />
+      </>
+      }
     </div>
   );
 }
diff --git a/src/Components/Editor/Actions/ContainerOperations.ts b/src/Components/Editor/Actions/ContainerOperations.ts
index b1d24a9..d0dc7e4 100644
--- a/src/Components/Editor/Actions/ContainerOperations.ts
+++ b/src/Components/Editor/Actions/ContainerOperations.ts
@@ -276,6 +276,9 @@ export function AddContainers(
       parentClone.children.splice(index, 0, newContainer);
     }
 
+    // Sort the parent children by x
+    UpdateParentChildrenList(parentClone);
+
     /// Handle behaviors here ///
 
     // Initialize default children of the container
@@ -287,9 +290,6 @@ export function AddContainers(
     // Then, apply the behaviors on its siblings (mostly for flex)
     ApplyBehaviorsOnSiblingsChildren(newContainer, current.symbols);
 
-    // Sort the parent children by x
-    UpdateParentChildrenList(parentClone);
-
     // Add to the list of container id for logging purpose
     containerIds.push(newContainer.properties.id);
   });
diff --git a/src/Components/Editor/Actions/ContextMenuActions.ts b/src/Components/Editor/Actions/ContextMenuActions.ts
index 260ce73..64f37fc 100644
--- a/src/Components/Editor/Actions/ContextMenuActions.ts
+++ b/src/Components/Editor/Actions/ContextMenuActions.ts
@@ -105,27 +105,30 @@ function HandleReplace(
   const index = selectedContainer.parent.children.indexOf(selectedContainer);
 
   const types = response.Containers.map(container => container.Type);
-  const newHistoryBeforeDelete = AddContainers(
-    index + 1,
-    types,
-    selectedContainer.properties.parentId,
-    configuration,
+
+  const newHistoryAfterDelete = DeleteContainer(
+    selectedContainer.properties.id,
     history,
     historyCurrentStep
   );
 
-  const newHistoryAfterDelete = DeleteContainer(
-    selectedContainer.properties.id,
-    newHistoryBeforeDelete,
-    newHistoryBeforeDelete.length - 1
+  const newHistoryBeforeDelete = AddContainers(
+    index,
+    types,
+    selectedContainer.properties.parentId,
+    configuration,
+    newHistoryAfterDelete,
+    newHistoryAfterDelete.length - 1
   );
 
   // Remove AddContainers from history
-  newHistoryAfterDelete.splice(newHistoryAfterDelete.length - 2, 1);
+  if (import.meta.env.PROD) {
+    newHistoryBeforeDelete.splice(newHistoryBeforeDelete.length - 2, 1);
+  }
 
   // Rename the last action by Replace
-  newHistoryAfterDelete[newHistoryAfterDelete.length - 1].lastAction =
+  newHistoryBeforeDelete[newHistoryBeforeDelete.length - 1].lastAction =
     `Replace ${selectedContainer.properties.id} by [${types.join(', ')}]`;
 
-  return newHistoryAfterDelete;
+  return newHistoryBeforeDelete;
 }
diff --git a/src/Components/Editor/Behaviors/Behaviors.ts b/src/Components/Editor/Behaviors/Behaviors.ts
index 7dfc78a..116917b 100644
--- a/src/Components/Editor/Behaviors/Behaviors.ts
+++ b/src/Components/Editor/Behaviors/Behaviors.ts
@@ -1,6 +1,6 @@
 import { IContainerModel } from '../../../Interfaces/IContainerModel';
 import { ISymbolModel } from '../../../Interfaces/ISymbolModel';
-import { APPLY_BEHAVIORS_ON_CHILDREN } from '../../../utils/default';
+import { APPLY_BEHAVIORS_ON_CHILDREN, ENABLE_RIGID, ENABLE_SWAP } from '../../../utils/default';
 import { ApplyAnchor } from './AnchorBehaviors';
 import { Flex } from './FlexBehaviors';
 import { ApplyRigidBody } from './RigidBodyBehaviors';
@@ -23,11 +23,15 @@ export function ApplyBehaviors(container: IContainerModel, symbols: Map<string,
     ApplyAnchor(container);
   }
 
-  ApplySwap(container);
+  if (ENABLE_SWAP) {
+    ApplySwap(container);
+  }
 
   Flex(container);
 
-  ApplyRigidBody(container);
+  if (ENABLE_RIGID) {
+    ApplyRigidBody(container);
+  }
 
   if (APPLY_BEHAVIORS_ON_CHILDREN) {
     // Apply DFS by recursion
diff --git a/src/Components/Editor/Behaviors/FlexBehaviors.ts b/src/Components/Editor/Behaviors/FlexBehaviors.ts
index 9e2a681..10f6cf0 100644
--- a/src/Components/Editor/Behaviors/FlexBehaviors.ts
+++ b/src/Components/Editor/Behaviors/FlexBehaviors.ts
@@ -38,6 +38,10 @@ function FlexGroup(flexibleGroup: IFlexibleGroup): void {
     nonFlexibleContainers
   } = SeparateFlexibleContainers(children);
 
+  if (flexibleContainers.length === 0) {
+    return;
+  }
+
   const minWidths = flexibleContainers
     .map(sibling => sibling.properties.minWidth);
 
@@ -50,12 +54,8 @@ function FlexGroup(flexibleGroup: IFlexibleGroup): void {
 
   const checkSumMinWidthsIsFitting = minimumPossibleWidth > requiredMaxWidth;
   if (checkSumMinWidthsIsFitting) {
-    Swal.fire({
-      icon: 'error',
-      title: 'Cannot fit!',
-      text: 'Cannot fit at all even when squeezing all flex containers to the minimum.'
-    });
-    throw new Error('[FlexBehavior] Cannot fit at all even when squeezing all flex containers to the minimum.');
+    console.warn('[FlexBehavior] Cannot fit at all even when squeezing all flex containers to the minimum.');
+    return;
   }
 
   const maxMinWidths = Math.max(...minWidths);
diff --git a/src/Components/Editor/Behaviors/RigidBodyBehaviors.ts b/src/Components/Editor/Behaviors/RigidBodyBehaviors.ts
index bdf2e71..90e4ac9 100644
--- a/src/Components/Editor/Behaviors/RigidBodyBehaviors.ts
+++ b/src/Components/Editor/Behaviors/RigidBodyBehaviors.ts
@@ -9,6 +9,7 @@
 import Swal from 'sweetalert2';
 import { IContainerModel } from '../../../Interfaces/IContainerModel';
 import { ISizePointer } from '../../../Interfaces/ISizePointer';
+import { ENABLE_HARD_RIGID } from '../../../utils/default';
 
 /**
  * "Transform the container into a rigid body"
@@ -23,7 +24,11 @@ export function ApplyRigidBody(
   container: IContainerModel
 ): IContainerModel {
   container = ConstraintBodyInsideParent(container);
-  container = ConstraintBodyInsideUnallocatedWidth(container);
+
+  if (ENABLE_HARD_RIGID) {
+    container = ConstraintBodyInsideUnallocatedWidth(container);
+  }
+
   return container;
 }
 
diff --git a/src/Components/InputGroup/InputGroup.tsx b/src/Components/InputGroup/InputGroup.tsx
index 8bb83f6..68b5910 100644
--- a/src/Components/InputGroup/InputGroup.tsx
+++ b/src/Components/InputGroup/InputGroup.tsx
@@ -17,12 +17,7 @@ interface IInputGroupProps {
   onChange?: (event: React.ChangeEvent<HTMLInputElement>) => void
 }
 
-const className = `
-        w-full
-        text-xs font-medium transition-all text-gray-800 mt-1 px-3 py-2
-        bg-white border-2 border-white rounded-lg placeholder-gray-800
-        focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500
-        disabled:bg-slate-300 disabled:text-gray-500 disabled:border-slate-300 disabled:shadow-none`;
+const className = 'input-group';
 
 export function InputGroup(props: IInputGroupProps): JSX.Element {
   return <>
diff --git a/src/index.scss b/src/index.scss
index c9b1963..4237259 100644
--- a/src/index.scss
+++ b/src/index.scss
@@ -18,7 +18,6 @@
   .elements-sidebar-row {
     @apply pl-6 pr-6 pt-2 pb-2 w-full
   }
-
   .symbols-sidebar-row {
     @apply elements-sidebar-row
   }
@@ -27,6 +26,10 @@
     @apply transition-all w-full h-auto p-4 flex
   }
 
+  .mainmenu-bg {
+    @apply bg-blue-100 h-full w-full
+  }
+
   .mainmenu-btn {
     @apply transition-all bg-blue-100 hover:bg-blue-200 text-blue-700 text-lg font-semibold p-8  rounded-lg
   }
@@ -42,7 +45,13 @@
   }
 
   .floating-btn {
-    @apply h-full w-full text-white align-middle items-center justify-center
+    @apply h-full w-full text-white align-middle
+      items-center justify-center
+  }
+
+  .bar {
+    @apply fixed z-20 flex flex-col top-0 left-0
+      h-full w-16 bg-slate-100
   }
 
   .bar-btn {
@@ -64,10 +73,18 @@
     text-gray-800 bg-slate-100
     dark:text-white dark:bg-gray-800
     text-xs font-bold
-    transition-all duration-100 scale-0 origin-left;
+    transition-all duration-100 scale-0 origin-left
   }
 
   .contextmenu-item {
     @apply px-2 py-1 hover:bg-slate-300 text-left
   }
+
+  .input-group {
+    @apply w-full
+        text-xs font-medium transition-all text-gray-800 mt-1 px-3 py-2
+        bg-white border-2 border-white rounded-lg placeholder-gray-800
+        focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500
+        disabled:bg-slate-300 disabled:text-gray-500 disabled:border-slate-300 disabled:shadow-none;
+  }
 }
\ No newline at end of file
diff --git a/src/main.tsx b/src/main.tsx
index 264c622..21c0771 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -11,7 +11,10 @@ function RenderRoot(root: Element | Document): void {
   );
 }
 
+// Specific for Modeler apps
+// eslint-disable-next-line @typescript-eslint/no-namespace
 namespace SVGLayoutDesigner {
+  // eslint-disable-next-line @typescript-eslint/naming-convention
   export const Render = RenderRoot;
 }
 
diff --git a/src/utils/default.ts b/src/utils/default.ts
index 5af68aa..0488fe4 100644
--- a/src/utils/default.ts
+++ b/src/utils/default.ts
@@ -9,6 +9,19 @@ import { ISymbolModel } from '../Interfaces/ISymbolModel';
 
 /// CONTAINER DEFAULTS ///
 
+/** Enable the swap behavior */
+export const ENABLE_SWAP = false;
+
+/** Enable the rigid behavior */
+export const ENABLE_RIGID = true;
+
+/**
+ * Enable the hard rigid behavior
+ * disallowing the container to overlap (ENABLE_RIGID must be true)
+ */
+export const ENABLE_HARD_RIGID = false;
+
+/** Enalbe the text in the containers */
 export const SHOW_TEXT = false;
 export const SHOW_SELECTOR_TEXT = true;
 export const DEFAULTCHILDTYPE_ALLOW_CYCLIC = false;
diff --git a/test-server/http.js b/test-server/http.js
index 4c84bfd..be800ae 100644
--- a/test-server/http.js
+++ b/test-server/http.js
@@ -55,6 +55,7 @@ const GetSVGLayoutConfiguration = () => {
         Type: 'Chassis',
         MaxWidth: 500,
         MinWidth: 200,
+        Width: 200,
         DefaultChildType: 'Trou',
         Style: {
           fillOpacity: 1,
@@ -63,7 +64,7 @@ const GetSVGLayoutConfiguration = () => {
           fill: '#d3c9b7',
         },
         ShowSelfDimensions: true,
-        IsDimensionBorrower: true
+        IsDimensionBorrower: true,
       },
       {
         Type: 'Trou',