diff --git a/source/en/block-regions.txt b/source/en/block-regions.txt
index a4b55c7..80501c2 100644
--- a/source/en/block-regions.txt
+++ b/source/en/block-regions.txt
@@ -2,6 +2,9 @@
 
 === Concept: Regions in a Theme
 
+[role="summary"]
+Overview of regions present in a theme.
+
 (((Theme,regions in)))
 (((Bartik theme,regions in)))
 (((Region,overview)))
diff --git a/source/en/install-prepare.txt b/source/en/install-prepare.txt
index d32db8c..5e7a6b8 100644
--- a/source/en/install-prepare.txt
+++ b/source/en/install-prepare.txt
@@ -1,6 +1,9 @@
 [[install-prepare]]
 === Preparing to Install
 
+[role="summary"]
+How to install the core software.
+
 (((Installing,core software)))
 (((Drush tool,using to install the core software)))
 (((Web installer,using to install the core software)))
diff --git a/source/en/install-requirements.txt b/source/en/install-requirements.txt
index 7ee12e4..d1ec43d 100644
--- a/source/en/install-requirements.txt
+++ b/source/en/install-requirements.txt
@@ -2,6 +2,9 @@
 
 === Concept: Server Requirements
 
+[role="summary"]
+Overview of server requirements for installing and running the core software.
+
 (((Installation requirements,overview)))
 (((Installation requirements,disk space)))
 (((Installation requirements,web server)))
diff --git a/source/en/install-run.txt b/source/en/install-run.txt
index a7a8cc6..a6a3e36 100644
--- a/source/en/install-run.txt
+++ b/source/en/install-run.txt
@@ -2,6 +2,9 @@
 
 === Running the Installer
 
+[role="summary"]
+How to use the installer to install the core software.
+
 (((Installer tool,running)))
 (((Installation process)))
 (((Installation profile)))
diff --git a/source/en/install-tools.txt b/source/en/install-tools.txt
index ebee8fe..73f7271 100644
--- a/source/en/install-tools.txt
+++ b/source/en/install-tools.txt
@@ -2,6 +2,9 @@
 
 === Concept: Additional Tools
 
+[role="summary"]
+Overview of additional tools that help site builders conveniently create sites.
+
 (((Tool,Coder)))
 (((Tool,Devel)))
 (((Tool,Drush)))
diff --git a/source/en/planning-data-types.txt b/source/en/planning-data-types.txt
index f8c6089..6e1d517 100644
--- a/source/en/planning-data-types.txt
+++ b/source/en/planning-data-types.txt
@@ -1,6 +1,9 @@
 [[planning-data-types]]
 === Concept: Content Entities and Fields
 
+[role="summary"]
+Overview of content entities and fields.
+
 (((Entity,overview)))
 (((Taxonomy term,overview)))
 (((Vocabulary,overview)))
diff --git a/source/en/planning-layout.txt b/source/en/planning-layout.txt
index d0483f9..9f45a6f 100644
--- a/source/en/planning-layout.txt
+++ b/source/en/planning-layout.txt
@@ -1,6 +1,9 @@
 [[planning-layout]]
 === Planning Your Site Layout
 
+[role="summary"]
+How to plan the navigation and layout of a website (mobile and desktop browsers).
+
 (((Planning,site layout)))
 (((Site layout,planning)))
 (((Layout,planning)))
diff --git a/source/en/planning-modular.txt b/source/en/planning-modular.txt
index 68f3cb5..df2cbd4 100644
--- a/source/en/planning-modular.txt
+++ b/source/en/planning-modular.txt
@@ -1,6 +1,9 @@
 [[planning-modular]]
 === Concept: Modular Content
 
+[role="summary"]
+Overview of modular content and how content in a page is sourced from other content items.
+
 (((Content,modular)))
 (((Modular content,overview)))
 (((Page,composite)))
diff --git a/source/en/planning-structure.txt b/source/en/planning-structure.txt
index 221c5f4..9566bed 100644
--- a/source/en/planning-structure.txt
+++ b/source/en/planning-structure.txt
@@ -1,6 +1,9 @@
 [[planning-structure]]
 === Planning your Content Structure
 
+[role="summary"]
+How to plan a content structure that decides which content entity type to use for content on the website.
+
 (((Content structure,planning)))
 (((Site plan,content structure)))
 
diff --git a/source/en/planning-workflow.txt b/source/en/planning-workflow.txt
index a2c925e..d80a5f3 100644
--- a/source/en/planning-workflow.txt
+++ b/source/en/planning-workflow.txt
@@ -2,6 +2,9 @@
 
 === Concept: Editorial Workflow
 
+[role="summary"]
+Overview of the editorial workflow to manage content on a website.
+
 (((Editorial Workflow,overview)))
 (((Published flag,overview)))
 (((Unpublished flag,overview)))
diff --git a/source/en/understanding-data.txt b/source/en/understanding-data.txt
index 51a60bf..8f1211b 100644
--- a/source/en/understanding-data.txt
+++ b/source/en/understanding-data.txt
@@ -1,6 +1,9 @@
 [[understanding-data]]
 === Concept: Types of Data
 
+[role="summary"]
+Overview of common types of data featured on a site.
+
 (((Data type,overview)))
 (((Data type,configuration)))
 (((Data type,content)))
diff --git a/source/en/understanding-distributions.txt b/source/en/understanding-distributions.txt
index 4851d12..5848be8 100644
--- a/source/en/understanding-distributions.txt
+++ b/source/en/understanding-distributions.txt
@@ -2,6 +2,9 @@
 
 === Concept: Distributions
 
+[role="summary"]
+Overview of distributions and its different types to set up use-specific websites.
+
 (((Distribution,overview)))
 (((Distribution,full-featured)))
 (((Distribution,quick-start)))
diff --git a/source/en/understanding-drupal.txt b/source/en/understanding-drupal.txt
index ce75546..08f7467 100644
--- a/source/en/understanding-drupal.txt
+++ b/source/en/understanding-drupal.txt
@@ -2,6 +2,9 @@
 
 === Concept: Drupal as a Content Management System
 
+[role="summary"]
+Overview of Drupal and the reasons to choose it as a reliable Content Management System (CMS).
+
 (((CMS (Content Management System),overview)))
 (((Content Management System (CMS),overview)))
 (((Drupal content management system,overview)))
diff --git a/source/en/understanding-gpl.txt b/source/en/understanding-gpl.txt
index 5cbfa97..f7cb77f 100644
--- a/source/en/understanding-gpl.txt
+++ b/source/en/understanding-gpl.txt
@@ -2,6 +2,9 @@
 
 === Concept: Drupal Licensing
 
+[role="summary"]
+Overview of Drupal licensing and the guidelines to be followed by contributors.
+
 (((Licensing,overview)))
 (((Drupal licensing,overview)))
 (((GPL (General Public License or GNU General Public License),overview)))
diff --git a/source/en/understanding-modules.txt b/source/en/understanding-modules.txt
index 9527020..58a8828 100644
--- a/source/en/understanding-modules.txt
+++ b/source/en/understanding-modules.txt
@@ -1,6 +1,9 @@
 [[understanding-modules]]
 === Concept: Modules
 
+[role="summary"]
+Overview of modules and the functionality they can be used for.
+
 (((Module,overview)))
 (((Contributed module,overview)))
 (((Core module,overview)))
diff --git a/source/en/understanding-project.txt b/source/en/understanding-project.txt
index d350dc3..5a570ef 100644
--- a/source/en/understanding-project.txt
+++ b/source/en/understanding-project.txt
@@ -2,6 +2,9 @@
 
 === Concept: The Drupal Project
 
+[role="summary"]
+Overview of FOSS, Drupal project, and Drupal Association.
+
 (((Drupal project,overview)))
 (((Drupal Association,overview)))
 (((FOSS (Free and Open Source Software),overview)))
diff --git a/source/en/understanding-themes.txt b/source/en/understanding-themes.txt
index 987fc73..61fe7db 100644
--- a/source/en/understanding-themes.txt
+++ b/source/en/understanding-themes.txt
@@ -2,6 +2,9 @@
 
 === Concept: Themes
 
+[role="summary"]
+Overview of themes and how to start working with them.
+
 (((Theme,overview)))
 (((Theme,core)))
 (((Core theme,overview)))