diff --git a/src/ui_ng/lib/README.md b/src/ui_ng/lib/README.md
index 6fa8c0ec0..b42a7e74c 100644
--- a/src/ui_ng/lib/README.md
+++ b/src/ui_ng/lib/README.md
@@ -52,10 +52,9 @@ If no parameters are passed to **'forRoot'**, the module will be initialized wit
 
 * **Registry log view**
 
+Use **withTitle** to set whether self-contained a header with title or not. Default is **false**, that means no header is existing.
 ```
-//No @Input properties
-
-<hbr-log></hbr-log>
+<hbr-log [withTitle]="..."></hbr-log>
 ```
 
 * **Replication Management View**
@@ -85,8 +84,18 @@ If **projectId** is set to the id of specified project, then only show the repli
 
 **hasProjectAdminRole** is a user session related property to determined whether the current user has project administrator role. Some action menus might be disabled based on this property.
 
+**tagClickEvent** is an @output event emitter for you to catch the tag click events.
+
 ```
-<hbr-repository-stackview [projectId]="..." [hasSignedIn]="..." [hasProjectAdminRole]="..."></hbr-repository-stackview>
+<hbr-repository-stackview [projectId]="..." [hasSignedIn]="..." [hasProjectAdminRole]="..." (tagClickEvent)="watchTagClickEvent($event)"></hbr-repository-stackview>
+
+...
+
+watchTagClickEvent(tag: Tag): void {
+    //Process tag
+    ...
+}
+
 ```
 
 ## Configurations
@@ -96,7 +105,7 @@ All the related configurations are defined in the **HarborModuleConfig** interfa
 The base configuration for the module. Mainly used to define the relevant endpoints of services which are in charge of retrieving data from backend APIs. It's a 'OpaqueToken' and defined by 'IServiceConfig' interface. If **config** is not set, the default value will be used.
 ```
 export const DefaultServiceConfig: IServiceConfig = {
-  systemInfoEndpoint: "/api/system",
+  systemInfoEndpoint: "/api/systeminfo",
   repositoryBaseEndpoint: "/api/repositories",
   logBaseEndpoint: "/api/logs",
   targetBaseEndpoint: "/api/targets",
@@ -126,6 +135,8 @@ HarborLibraryModule.forRoot({
 
 ```
 It supports partially overriding. For the items not overridden, default values will be adopted. The items contained in **config** are:
+* **systemInfoEndpoint:** The base endpoint of the service used to get the related system configurations. Default value is "/api/systeminfo".
+
 * **repositoryBaseEndpoint:** The base endpoint of the service used to handle the repositories of registry and/or tags of repository. Default value is "/api/repositories".
 
 * **logBaseEndpoint:** The base endpoint of the service used to handle the recent access logs. Default is "/api/logs".
@@ -578,32 +589,39 @@ HarborLibraryModule.forRoot({
 * **ScanningResultService:** Get the vulnerabilities scanning results for the specified tag.
 ```
 @Injectable()
+/**
+ * Get the vulnerabilities scanning results for the specified tag.
+ * 
+ * @export
+ * @abstract
+ * @class ScanningResultService
+ */
 export class MyScanningResultService extends ScanningResultService {
     /**
      * Get the summary of vulnerability scanning result.
      * 
      * @abstract
      * @param {string} tagId
-     * @returns {(Observable<ScanningResultSummary> | Promise<ScanningResultSummary> | ScanningResultSummary)}
+     * @returns {(Observable<VulnerabilitySummary> | Promise<VulnerabilitySummary> | VulnerabilitySummary)}
      * 
      * @memberOf ScanningResultService
      */
-    getScanningResultSummary(tagId: string): Observable<ScanningResultSummary> | Promise<ScanningResultSummary> | ScanningResultSummary {
-        ...
-    }
+     getVulnerabilityScanningSummary(tagId: string): Observable<VulnerabilitySummary> | Promise<VulnerabilitySummary> | VulnerabilitySummary{
+         ...
+     }
 
     /**
      * Get the detailed vulnerabilities scanning results.
      * 
      * @abstract
      * @param {string} tagId
-     * @returns {(Observable<ScanningDetailResult[]> | Promise<ScanningDetailResult[]> | ScanningDetailResult[])}
+     * @returns {(Observable<VulnerabilityItem[]> | Promise<VulnerabilityItem[]> | VulnerabilityItem[])}
      * 
      * @memberOf ScanningResultService
      */
-    getScanningResults(tagId: string): Observable<ScanningDetailResult[]> | Promise<ScanningDetailResult[]> | ScanningDetailResult[] {
-        ...
-    }
+     getVulnerabilityScanningResults(tagId: string): Observable<VulnerabilityItem[]> | Promise<VulnerabilityItem[]> | VulnerabilityItem[]{
+         ...
+     }
 }
 
 ...
@@ -612,4 +630,30 @@ HarborLibraryModule.forRoot({
 })
 ...
 
+```
+
+* **SystemInfoService:** Get related system configurations.
+```
+/**
+ * Get System information about current backend server.
+ * @abstract
+ * @class
+ */
+export class MySystemInfoService extends SystemInfoService {
+  /**
+   *  Get global system information.
+   *  @abstract
+   *  @returns 
+   */
+   getSystemInfo(): Observable<SystemInfo> | Promise<SystemInfo> | SystemInfo {
+       ...
+   }
+}
+
+...
+HarborLibraryModule.forRoot({
+    systemInfoService: { provide: SystemInfoService, useClass: MySystemInfoService }
+})
+...
+
 ```
\ No newline at end of file
diff --git a/src/ui_ng/lib/src/endpoint/endpoint.component.html.ts b/src/ui_ng/lib/src/endpoint/endpoint.component.html.ts
index ebd4ce84d..1a15723a1 100644
--- a/src/ui_ng/lib/src/endpoint/endpoint.component.html.ts
+++ b/src/ui_ng/lib/src/endpoint/endpoint.component.html.ts
@@ -20,6 +20,7 @@ export const ENDPOINT_TEMPLATE: string = `
                 <clr-dg-column [clrDgField]="'name'">{{'DESTINATION.NAME' | translate}}</clr-dg-column>
                 <clr-dg-column [clrDgField]="'endpoint'">{{'DESTINATION.URL' | translate}}</clr-dg-column>
                 <clr-dg-column [clrDgSortBy]="creationTimeComparator">{{'DESTINATION.CREATION_TIME' | translate}}</clr-dg-column>
+                <clr-dg-placeholder>{{'DESTINATION.PLACEHOLDER' | translate }}</clr-dg-placeholder>
                 <clr-dg-row *clrDgItems="let t of targets" [clrDgItem]='t'>
                     <clr-dg-action-overflow>
                         <button class="action-item" (click)="editTarget(t)">{{'DESTINATION.TITLE_EDIT' | translate}}</button>
diff --git a/src/ui_ng/lib/src/list-replication-rule/list-replication-rule.component.html.ts b/src/ui_ng/lib/src/list-replication-rule/list-replication-rule.component.html.ts
index 3292a7f42..f19268eee 100644
--- a/src/ui_ng/lib/src/list-replication-rule/list-replication-rule.component.html.ts
+++ b/src/ui_ng/lib/src/list-replication-rule/list-replication-rule.component.html.ts
@@ -7,6 +7,7 @@ export const LIST_REPLICATION_RULE_TEMPLATE: string = `
     <clr-dg-column [clrDgField]="'target_name'">{{'REPLICATION.DESTINATION_NAME' | translate}}</clr-dg-column>
     <clr-dg-column [clrDgSortBy]="startTimeComparator">{{'REPLICATION.LAST_START_TIME' | translate}}</clr-dg-column>
     <clr-dg-column [clrDgSortBy]="enabledComparator">{{'REPLICATION.ACTIVATION' | translate}}</clr-dg-column>
+    <clr-dg-placeholder>{{'REPLICATION.PLACEHOLDER' | translate }}</clr-dg-placeholder>
     <clr-dg-row *clrDgItems="let p of changedRules" [clrDgItem]="p" (click)="selectRule(p)" [style.backgroundColor]="(!projectScope && withReplicationJob && selectedId === p.id) ? '#eee' : ''">
         <clr-dg-action-overflow>
             <button class="action-item" (click)="editRule(p)">{{'REPLICATION.EDIT_POLICY' | translate}}</button>
diff --git a/src/ui_ng/lib/src/list-repository/list-repository.component.html.ts b/src/ui_ng/lib/src/list-repository/list-repository.component.html.ts
index 1a5e65037..158fac220 100644
--- a/src/ui_ng/lib/src/list-repository/list-repository.component.html.ts
+++ b/src/ui_ng/lib/src/list-repository/list-repository.component.html.ts
@@ -3,6 +3,7 @@ export const LIST_REPOSITORY_TEMPLATE = `
   <clr-dg-column [clrDgField]="'name'">{{'REPOSITORY.NAME' | translate}}</clr-dg-column>
   <clr-dg-column [clrDgSortBy]="tagsCountComparator">{{'REPOSITORY.TAGS_COUNT' | translate}}</clr-dg-column>
   <clr-dg-column [clrDgSortBy]="pullCountComparator">{{'REPOSITORY.PULL_COUNT' | translate}}</clr-dg-column>
+  <clr-dg-placeholder>{{'REPOSITORY.PLACEHOLDER' | translate }}</clr-dg-placeholder>
   <clr-dg-row *clrDgItems="let r of repositories" [clrDgItem]='r'>
      <clr-dg-action-overflow [hidden]="!hasProjectAdminRole">
        <button class="action-item" (click)="deleteRepo(r.name)">{{'REPOSITORY.DELETE' | translate}}</button>
diff --git a/src/ui_ng/lib/src/replication/replication.component.html.ts b/src/ui_ng/lib/src/replication/replication.component.html.ts
index 283a45e3c..5e89a2843 100644
--- a/src/ui_ng/lib/src/replication/replication.component.html.ts
+++ b/src/ui_ng/lib/src/replication/replication.component.html.ts
@@ -53,6 +53,7 @@ export const REPLICATION_TEMPLATE: string = `
         <clr-dg-column [clrDgSortBy]="creationTimeComparator">{{'REPLICATION.CREATION_TIME' | translate}}</clr-dg-column>
         <clr-dg-column [clrDgSortBy]="updateTimeComparator">{{'REPLICATION.END_TIME' | translate}}</clr-dg-column>
         <clr-dg-column>{{'REPLICATION.LOGS' | translate}}</clr-dg-column>
+        <clr-dg-placeholder>{{'REPLICATION.JOB_PLACEHOLDER' | translate }}</clr-dg-placeholder>
         <clr-dg-row *clrDgItems="let j of jobs" [clrDgItem]='j'>
             <clr-dg-cell>{{j.repository}}</clr-dg-cell>
             <clr-dg-cell>{{j.status}}</clr-dg-cell>
diff --git a/src/ui_ng/lib/src/repository-stackview/repository-stackview.component.html.ts b/src/ui_ng/lib/src/repository-stackview/repository-stackview.component.html.ts
index b9d935914..8ab942517 100644
--- a/src/ui_ng/lib/src/repository-stackview/repository-stackview.component.html.ts
+++ b/src/ui_ng/lib/src/repository-stackview/repository-stackview.component.html.ts
@@ -21,7 +21,7 @@ export const REPOSITORY_STACKVIEW_TEMPLATE: string = `
         <clr-dg-cell>{{r.name}}</clr-dg-cell>
         <clr-dg-cell>{{r.tags_count}}</clr-dg-cell>
         <clr-dg-cell>{{r.pull_count}}</clr-dg-cell>        
-        <hbr-tag *clrIfExpanded ngProjectAs="clr-dg-row-detail" class="sub-grid-custom" [repoName]="r.name" [registryUrl]="registryUrl" [withNotary]="withNotary" [hasSignedIn]="hasSignedIn" [hasProjectAdminRole]="hasProjectAdminRole" [projectId]="projectId" [isEmbedded]="true" (refreshRepo)="refresh($event)"></hbr-tag>
+        <hbr-tag *clrIfExpanded ngProjectAs="clr-dg-row-detail" (tagClickEvent)="watchTagClickEvt($event)" class="sub-grid-custom" [repoName]="r.name" [registryUrl]="registryUrl" [withNotary]="withNotary" [hasSignedIn]="hasSignedIn" [hasProjectAdminRole]="hasProjectAdminRole" [projectId]="projectId" [isEmbedded]="true" (refreshRepo)="refresh($event)"></hbr-tag>
       </clr-dg-row>
       <clr-dg-footer> 
         {{pagination.firstItem + 1}} - {{pagination.lastItem + 1}} {{'REPOSITORY.OF' | translate}}
diff --git a/src/ui_ng/lib/src/repository-stackview/repository-stackview.component.ts b/src/ui_ng/lib/src/repository-stackview/repository-stackview.component.ts
index c6d1a5ce3..7321a1134 100644
--- a/src/ui_ng/lib/src/repository-stackview/repository-stackview.component.ts
+++ b/src/ui_ng/lib/src/repository-stackview/repository-stackview.component.ts
@@ -1,4 +1,13 @@
-import { Component, Input, OnInit, ViewChild, ChangeDetectionStrategy, ChangeDetectorRef } from '@angular/core';
+import {
+  Component,
+  Input,
+  Output,
+  OnInit,
+  ViewChild,
+  ChangeDetectionStrategy,
+  ChangeDetectorRef,
+  EventEmitter
+} from '@angular/core';
 import { TranslateService } from '@ngx-translate/core';
 import { Comparator } from 'clarity-angular';
 
@@ -21,6 +30,7 @@ import { ConfirmationDialogComponent } from '../confirmation-dialog/confirmation
 import { ConfirmationMessage } from '../confirmation-dialog/confirmation-message';
 import { ConfirmationAcknowledgement } from '../confirmation-dialog/confirmation-state-message';
 import { Subscription } from 'rxjs/Subscription';
+import { Tag } from '../service/interface';
 
 @Component({
   selector: 'hbr-repository-stackview',
@@ -34,6 +44,7 @@ export class RepositoryStackviewComponent implements OnInit {
 
   @Input() hasSignedIn: boolean;
   @Input() hasProjectAdminRole: boolean;
+  @Output() tagClickEvent = new EventEmitter<Tag>();
 
   lastFilteredRepoName: string;
   repositories: Repository[];
@@ -120,4 +131,8 @@ export class RepositoryStackviewComponent implements OnInit {
   refresh() {
     this.retrieve();
   }
+
+  watchTagClickEvt(tag: Tag): void {
+    this.tagClickEvent.emit(tag);
+  }
 }
\ No newline at end of file
diff --git a/src/ui_ng/lib/src/tag/tag.component.html.ts b/src/ui_ng/lib/src/tag/tag.component.html.ts
index dcf1a4f7d..1fb6ba5f0 100644
--- a/src/ui_ng/lib/src/tag/tag.component.html.ts
+++ b/src/ui_ng/lib/src/tag/tag.component.html.ts
@@ -22,6 +22,7 @@ export const TAG_TEMPLATE = `
     <clr-dg-column [clrDgField]="'docker_version'">{{'REPOSITORY.DOCKER_VERSION' | translate}}</clr-dg-column>
     <clr-dg-column [clrDgField]="'architecture'">{{'REPOSITORY.ARCHITECTURE' | translate}}</clr-dg-column>
     <clr-dg-column [clrDgField]="'os'">{{'REPOSITORY.OS' | translate}}</clr-dg-column>
+    <clr-dg-placeholder>{{'TGA.PLACEHOLDER' | translate }}</clr-dg-placeholder>
     <clr-dg-row *clrDgItems="let t of tags" [clrDgItem]='t'>
       <clr-dg-action-overflow>
         <button class="action-item" (click)="showDigestId(t)">{{'REPOSITORY.COPY_DIGEST_ID' | translate}}</button>