Add_Entity_Help

@dbt102, Thanks for providing patch, It works for Help Page but when I checked for :

+    case 'admin/structure/entity/add':
+      return '<p>' . t('Use this page to create a new custom block.') . '</p>';
+  }
+  if ($arg[0] == 'admin' && $arg[1] == 'structure' && $arg['2'] == 'block' && (empty($arg[3]) || $arg[3] == 'list')) {
+    $demo_theme = !empty($arg[4]) ? $arg[4] : variable_get('theme_default', 'bartik');
+    $themes = list_themes();
+    $output = '<p>' . t('This page provides a drag-and-drop interface for assigning a block to a region, and for controlling the order of blocks within regions. Since not all themes implement the same regions, or display regions in the same way, blocks are positioned on a per-theme basis. Remember that your changes will not be saved until you click the <em>Save blocks</em> button at the bottom of the page. Click the <em>configure</em> link next to each block to configure its specific title and visibility settings.') . '</p>';
+    $output .= '<p>' . l(t('Demonstrate block regions (!theme)', array('!theme' => $themes[$demo_theme]->info['name'])), 'admin/structure/entity/demo/' . $demo_theme) . '</p>';
+    return $output;
+  }
+}

I didn't find any link to check the changes from Structure.

@dbt102, Perfect Thanks!.. now it works well as I checked it with Simplytest.me.

nice , thanks!

#7 no longer applies in DrupalCI because of fuzz in the patch. Here is a re-roll. Also has the whitespace error removed (coding standards).

Committed to 7.x-1.x. This should also be forward-ported to 8.x-1.x.

I should have reviewed the patch more carefully. Here are a few changes that need to be made.

I changed the help URL to point to the Entity API documentation guide instead of the core Drupal Entity API guide. This help should be about the Entity API module, not about the core Entity API.

I removed extraneous white space from some strings.

I removed an unused parameter (@blocks) in the second argument to a t() call.