diff --git a/examples/demo/demo.ecf b/examples/demo/demo.ecf
index a607c2c..7df2c04 100644
--- a/examples/demo/demo.ecf
+++ b/examples/demo/demo.ecf
@@ -40,6 +40,7 @@
 		<library name="cms_sitemap_module" location="..\..\modules\sitemap\sitemap.ecf" readonly="false"/>
 		<library name="cms_session_auth_module" location="..\..\modules\session_auth\cms_session_auth.ecf" readonly="false"/>
 		<library name="cms_taxnomy_module" location="..\..\modules\taxonomy\taxonomy.ecf" readonly="false"/>
+		<library name="embedded_video_module" location="..\..\modules\embedded_video\embedded_video.ecf" readonly="false"/>
 		<library name="cms_wikitext_module" location="..\..\modules\wikitext\wikitext.ecf" readonly="false"/>
 		<library name="persistence_sqlite3" location="..\..\library\persistence\sqlite3\sqlite3.ecf" readonly="false"/>
 		<!--
diff --git a/examples/demo/roc.cfg b/examples/demo/roc.cfg
index c7160be..47ebe37 100644
--- a/examples/demo/roc.cfg
+++ b/examples/demo/roc.cfg
@@ -22,6 +22,7 @@
 		"taxonomy": 		{ "location": "../../modules/taxonomy" },
 		"files": 			{ "location": "../../modules/files" },
 		"custom_block": 	{ "location": "../../modules/custom_block" },
+		"embedded_video": 			{ "location": "../../modules/embedded_video" },
 		"wikitext": 		{ "location": "../../modules/wikitext" },
 		"messaging": 		{ "location": "../../modules/messaging" },
 		"comments": 		{ "location": "../../modules/comments" }
diff --git a/examples/demo/site/db/mails/README.md b/examples/demo/site/db/mails/README.md
new file mode 100644
index 0000000..4be5133
--- /dev/null
+++ b/examples/demo/site/db/mails/README.md
@@ -0,0 +1 @@
+This directory can be used to keep emails sent by the CMS.
diff --git a/examples/demo/src/demo_cms_execution.e b/examples/demo/src/demo_cms_execution.e
index 9d5bf49..4dc81a2 100644
--- a/examples/demo/src/demo_cms_execution.e
+++ b/examples/demo/src/demo_cms_execution.e
@@ -76,6 +76,7 @@ feature -- CMS modules
 
 				-- Wiki
 			a_setup.register_module (create {WIKITEXT_MODULE}.make)
+			a_setup.register_module (create {EMBEDDED_VIDEO_MODULE}.make)
 
 				-- Recent changes
 			a_setup.register_module (create {CMS_RECENT_CHANGES_MODULE}.make)
diff --git a/library/model/src/link/cms_local_link.e b/library/model/src/link/cms_local_link.e
index 227a09c..82a393e 100644
--- a/library/model/src/link/cms_local_link.e
+++ b/library/model/src/link/cms_local_link.e
@@ -90,6 +90,10 @@ feature -- Element change
 				children := lst
 			end
 			lst.force (lnk)
+			if not is_expanded then
+				set_expandable (True)
+				set_collapsed (True)
+			end
 		end
 
 	remove_link (lnk: CMS_LINK)
@@ -102,6 +106,8 @@ feature -- Element change
 				lst.prune_all (lnk)
 				if lst.is_empty then
 					children := Void
+					set_collapsed (False)
+					set_expandable (False)
 				end
 			end
 		end
@@ -110,6 +116,12 @@ feature -- Element change
 			-- Set `children' to `lst'.	
 		do
 			children := lst
+			if lst /= Void and then not lst.is_empty then
+				if not is_expanded then
+					set_expandable (True)
+					set_collapsed (True)
+				end
+			end
 		ensure
 			children_set: children = lst
 		end
@@ -184,6 +196,6 @@ feature {NONE} -- Implementation
 invariant
 
 note
-	copyright: "2011-2016, Javier Velilla, Jocelyn Fiat, Eiffel Software and others"
+	copyright: "2011-2017, Javier Velilla, Jocelyn Fiat, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
 end
diff --git a/modules/admin/admin.ecf b/modules/admin/admin.ecf
index 7bd7dfa..db51cc3 100644
--- a/modules/admin/admin.ecf
+++ b/modules/admin/admin.ecf
@@ -19,6 +19,7 @@
 		<library name="error" location="$ISE_LIBRARY\contrib\library\utility\general\error\error.ecf"/>
 		<library name="http" location="$ISE_LIBRARY\contrib\library\network\protocol\http\http.ecf"/>
 		<library name="http_authorization" location="$ISE_LIBRARY\contrib\library\web\authentication\http_authorization\http_authorization.ecf" readonly="false"/>
+		<library name="text_filter" location="$ISE_LIBRARY\unstable\library\text\text_filter\text_filter.ecf"/>
 		<library name="time" location="$ISE_LIBRARY\library\time\time.ecf"/>
 		<library name="wsf" location="$ISE_LIBRARY\contrib\library\web\framework\ewf\wsf\wsf.ecf"/>
 		<library name="wsf_extension" location="$ISE_LIBRARY\contrib\library\web\framework\ewf\wsf\wsf_extension.ecf" readonly="false"/>
diff --git a/modules/admin/cms_admin_module_administration.e b/modules/admin/cms_admin_module_administration.e
index befb5d2..047b0fc 100644
--- a/modules/admin/cms_admin_module_administration.e
+++ b/modules/admin/cms_admin_module_administration.e
@@ -36,6 +36,7 @@ feature -- Security
 			Result.force ("clear blocks cache")
 			Result.force ("admin export")
 			Result.force ("admin import")
+			Result.force ("admin formats")
 		end
 
 feature {NONE} -- Router/administration
@@ -48,6 +49,7 @@ feature {NONE} -- Router/administration
 			l_modules_handler: CMS_ADMIN_MODULES_HANDLER
 			l_users_handler: CMS_ADMIN_USERS_HANDLER
 			l_roles_handler: CMS_ADMIN_ROLES_HANDLER
+			l_formats_handler: CMS_ADMIN_FORMATS_HANDLER
 
 			l_user_handler: CMS_USER_HANDLER
 			l_role_handler:	CMS_ROLE_HANDLER
@@ -58,6 +60,7 @@ feature {NONE} -- Router/administration
 			l_admin_import_handler: CMS_ADMIN_IMPORT_HANDLER
 			l_admin_path_alias_handler: CMS_ADMIN_PATH_ALIAS_HANDLER
 
+
 			l_uri_mapping: WSF_URI_MAPPING
 		do
 			create l_admin_handler.make (a_api)
@@ -76,6 +79,13 @@ feature {NONE} -- Router/administration
 			create l_uri_mapping.make_trailing_slash_ignored ("/roles", l_roles_handler)
 			a_router.map (l_uri_mapping, a_router.methods_get_post)
 
+			create l_formats_handler.make (a_api)
+			create l_uri_mapping.make_trailing_slash_ignored ("/formats", l_formats_handler)
+			a_router.map (l_uri_mapping, a_router.methods_get_post)
+			create l_uri_mapping.make_trailing_slash_ignored ("/formats", l_formats_handler)
+			a_router.handle ("/formats/{format-id}", l_formats_handler, a_router.methods_get_post)
+			a_router.handle ("/formats/{format-id}/add", l_formats_handler, a_router.methods_get_post)
+
 			create l_admin_logs_handler.make (a_api)
 			create l_uri_mapping.make_trailing_slash_ignored ("/logs", l_admin_logs_handler)
 			a_router.map (l_uri_mapping, a_router.methods_get)
@@ -108,6 +118,7 @@ feature {NONE} -- Router/administration
 			a_router.handle ("/role/{id}", l_role_handler, a_router.methods_get)
 			a_router.handle ("/role/{id}/edit", l_role_handler, a_router.methods_get_post)
 			a_router.handle ("/role/{id}/delete", l_role_handler, a_router.methods_get_post)
+
 		end
 
 feature -- Hooks
@@ -137,6 +148,10 @@ feature -- Hooks
 
 				create lnk.make ("Module", l_api.administration_path_location ("modules"))
 				lnk.set_permission_arguments (<<"manage module">>)
+				admin_lnk.extend (lnk)
+
+				create lnk.make ("Formats", l_api.administration_path_location ("formats"))
+				lnk.set_permission_arguments (<<"admin formats">>)
 				admin_lnk.extend (lnk)
 
 					-- Per module cache permission!
diff --git a/modules/admin/handler/cms_admin_modules_handler.e b/modules/admin/handler/cms_admin_modules_handler.e
index 3a57e55..a44ab5d 100644
--- a/modules/admin/handler/cms_admin_modules_handler.e
+++ b/modules/admin/handler/cms_admin_modules_handler.e
@@ -109,7 +109,7 @@ feature -- Execution
 				if l_op.same_string ("Install modules") then
 					create {GENERIC_VIEW_CMS_RESPONSE} r.make (req, res, api)
 
-					if attached api.setup.string_8_item ("admin.installation_access") as l_access then
+					if attached api.setup.string_8_item ("administration.installation_access") as l_access then
 						if l_access.is_case_insensitive_equal ("none") then
 							l_denied := True
 						elseif l_access.is_case_insensitive_equal ("permission") then
diff --git a/modules/blog/cms_blog_module.e b/modules/blog/cms_blog_module.e
index 68e99da..4b8ac7f 100644
--- a/modules/blog/cms_blog_module.e
+++ b/modules/blog/cms_blog_module.e
@@ -60,12 +60,6 @@ feature {CMS_API} -- Module Initialization
 
 				node_api := l_node_api
 					-- Depends on {CMS_NODE_MODULE}
-					--| For now, add all available formats to content type `ct'.
-				across
-					api.formats as ic
-				loop
-					ct.extend_format (ic.item)
-				end
 				l_node_api.add_node_type (ct)
 				l_node_api.add_node_type_webform_manager (create {CMS_BLOG_NODE_TYPE_WEBFORM_MANAGER}.make (ct, l_node_api))
 			end
diff --git a/modules/embedded_video/embedded_video-safe.ecf b/modules/embedded_video/embedded_video-safe.ecf
new file mode 100644
index 0000000..0a5e0c3
--- /dev/null
+++ b/modules/embedded_video/embedded_video-safe.ecf
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<redirection xmlns="http://www.eiffel.com/developers/xml/configuration-1-16-0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.eiffel.com/developers/xml/configuration-1-16-0 http://www.eiffel.com/developers/xml/configuration-1-16-0.xsd" uuid="1469E34C-98EE-4E39-BC13-24A0D93A7EC0" message="Obsolete: use embedded_video.ecf !" location="embedded_video.ecf">
+</redirection>
diff --git a/modules/embedded_video/embedded_video.ecf b/modules/embedded_video/embedded_video.ecf
new file mode 100644
index 0000000..db6f46c
--- /dev/null
+++ b/modules/embedded_video/embedded_video.ecf
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<system xmlns="http://www.eiffel.com/developers/xml/configuration-1-16-0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.eiffel.com/developers/xml/configuration-1-16-0 http://www.eiffel.com/developers/xml/configuration-1-16-0.xsd" name="embedded_video" uuid="1469E34C-98EE-4E39-BC13-24A0D93A7EC0" library_target="embedded_video">
+	<target name="embedded_video">
+		<root all_classes="true"/>
+		<option warning="true">
+		</option>
+		<capability>
+			<concurrency support="scoop" use="scoop"/>
+			<void_safety support="all"/>
+		</capability>
+		<library name="base" location="$ISE_LIBRARY\library\base\base.ecf"/>
+		<library name="cms" location="..\..\cms.ecf" readonly="false"/>
+		<library name="text_filter" location="$ISE_LIBRARY\unstable\library\text\text_filter\text_filter.ecf"/>
+		<library name="wsf" location="$ISE_LIBRARY\contrib\library\web\framework\ewf\wsf\wsf.ecf"/>
+		<cluster name="src" location="src\" recursive="true"/>
+	</target>
+</system>
diff --git a/modules/embedded_video/src/embedded_video_module.e b/modules/embedded_video/src/embedded_video_module.e
new file mode 100644
index 0000000..c0526e4
--- /dev/null
+++ b/modules/embedded_video/src/embedded_video_module.e
@@ -0,0 +1,61 @@
+note
+	description: "[
+		Module that allows you to embed videos from YouTube and Vimeo in a web page.
+	]"
+	date: "$Date: 2015-07-16 15:57:08 +0200 (jeu., 16 juil. 2015) $"
+	revision: "$Revision: 97722 $"
+
+class
+	EMBEDDED_VIDEO_MODULE
+
+inherit
+
+	CMS_MODULE
+		redefine
+			initialize
+		end
+
+	SHARED_EXECUTION_ENVIRONMENT
+		export
+			{NONE} all
+		end
+
+	REFACTORING_HELPER
+
+create
+	make
+
+feature {NONE} -- Initialization
+
+	make
+			-- Create current module
+		do
+			version := "1.0"
+			description := "Embedded video module"
+			package := "filters"
+		end
+
+feature -- Access
+
+	name: STRING = "embedded_video"
+			-- <Precursor>
+
+feature {CMS_API} -- Module Initialization
+
+	initialize (api: CMS_API)
+			-- <Precursor>
+		do
+			Precursor {CMS_MODULE} (api)
+			api.content_filters.extend (create {VIDEO_CONTENT_FILTER})
+--			f := api.new_format ("video_html", "Video HTML content", <<{VIDEO_CONTENT_FILTER}.name>>)
+--			api.formats.extend (f)
+		end
+
+feature -- Router
+
+	setup_router (a_router: WSF_ROUTER; a_api: CMS_API)
+			-- Router configuration.
+		do
+		end
+
+end
diff --git a/modules/embedded_video/src/video_content_filter.e b/modules/embedded_video/src/video_content_filter.e
new file mode 100644
index 0000000..8498abe
--- /dev/null
+++ b/modules/embedded_video/src/video_content_filter.e
@@ -0,0 +1,182 @@
+note
+	description: "[
+		Quick syntax:
+			[video:url]
+		Full syntax:
+			[video:url width:X height:Y]
+	]"
+	date: "$Date: 2015-07-18 13:53:56 +0200 (sam., 18 juil. 2015) $"
+	revision: "$Revision: 97737 $"
+
+class
+	VIDEO_CONTENT_FILTER
+
+inherit
+
+	CONTENT_FILTER
+		redefine
+			help,
+			default_create
+		end
+
+feature {NONE} -- Initialization
+
+	default_create
+		do
+			Precursor
+			width := 420
+			height := 315
+		end
+
+feature -- Access
+
+	name: STRING_8 = "video"
+
+	title: STRING_8 = "Embedded video"
+
+	description: STRING_8 = "Embed any video using pattern [video:url width:X height:Y], width and height are optionals."
+
+	help: STRING = "Embed video using the following pattern: [video:url width:X height:Y], width and height are optionals."
+
+feature -- Conversion
+
+	filter (a_text: STRING_8)
+			-- [video:url width:X height:Y]
+		local
+			l_new: detachable STRING
+			i,p,q,diff: INTEGER
+		do
+			from
+				i := 1
+			until
+				i > a_text.count
+			loop
+				p := a_text.substring_index ("[video:", i)
+				if p > 0 then
+					q := a_text.index_of (']', p + 1)
+					l_new := to_embedded_video_code (a_text, p, q)
+					if l_new /= Void then
+						diff := l_new.count - (q - p + 1)
+						i := i + diff
+						a_text.replace_substring (l_new, p, q)
+					else
+						i := q + 1
+					end
+				else
+					i := a_text.count
+				end
+				i := i + 1
+			end
+		end
+
+	to_embedded_video_code (a_text: STRING_8; a_lower, a_upper: INTEGER): detachable STRING
+		require
+			a_lower < a_upper
+			a_text.substring (a_lower, a_lower + 7).same_string ("[video:")
+			a_text.ends_with_general ("]")
+		local
+			i,j,n: INTEGER
+			s,k,v: STRING_8
+			l_url: STRING_8
+			l_width, l_height: detachable STRING
+		do
+			s := a_text.substring (a_lower + 1, a_upper - 1)
+			s.left_adjust
+			i := next_space_position (s, 1)
+			if i > 0 then
+				l_url := s.head (i - 1)
+				s.remove_head (i)
+				s.left_adjust
+				from
+					n := s.count
+					i := 1
+				until
+					i > n
+				loop
+					j := s.index_of (':', i)
+					if j > 0 then
+						k := s.head (j - 1)
+						s.remove_head (j)
+						s.left_adjust
+						i := 1
+						n := s.count
+						j := next_space_position (s, 1)
+						if j > 0 then
+							v := s.head (j - 1)
+							s.remove_head (j)
+							s.left_adjust
+						else
+							v := s.substring (i, n)
+							s.wipe_out
+						end
+						n := s.count
+						i := 1
+						if k.is_case_insensitive_equal ("width") then
+							l_width := v
+						elseif k.is_case_insensitive_equal ("height") then
+							l_height := v
+						else
+							check supported: False end
+						end
+					else
+						i := n + 1
+					end
+				end
+			else
+				s.remove_head (6)
+				l_url := s
+			end
+			if not l_url.is_whitespace then
+				create Result.make_from_string ("<iframe src=%"")
+				Result.append (l_url)
+				Result.append_character ('%"')
+				if l_width = Void then
+					if width > 0 then
+						l_width := width.out
+					end
+				end
+				if l_height = Void then
+					if height > 0 then
+						l_height := height.out
+					end
+				end
+				if l_width /= Void then
+					Result.append (" width=%"")
+					Result.append (l_width)
+					Result.append_character ('%"')
+				end
+				if l_height /= Void then
+					Result.append (" height=%"")
+					Result.append (l_height)
+					Result.append_character ('%"')
+				end
+				Result.append ("frameborder=%"0%" allowfullscreen></iframe>")
+			end
+		end
+
+	next_space_position (a_text: STRING; a_start_index: INTEGER): INTEGER
+		local
+			n: INTEGER
+		do
+			from
+				Result := a_start_index
+				n := a_text.count
+			until
+				a_text[Result].is_space or Result > n
+			loop
+				Result := Result + 1
+			end
+			if Result > n then
+				Result := 0
+			end
+		end
+
+feature {NONE} -- Implementation
+
+	width: INTEGER;
+		-- Specifies the width of an <iframe> in pixels.
+
+	height: INTEGER
+			-- Specifies the height of an <iframe> in pixels.
+
+end
diff --git a/modules/embedded_video/src/video_html_content_format.e b/modules/embedded_video/src/video_html_content_format.e
new file mode 100644
index 0000000..4a9a979
--- /dev/null
+++ b/modules/embedded_video/src/video_html_content_format.e
@@ -0,0 +1,34 @@
+note
+	description: "Summary description for {VIDEO_HTML_CONTENT_FORMAT}."
+	author: ""
+	date: "$Date: 2015-07-10 13:38:10 +0200 (ven., 10 juil. 2015) $"
+	revision: "$Revision: 97687 $"
+
+class
+	VIDEO_HTML_CONTENT_FORMAT
+
+inherit
+
+	CONTENT_FORMAT
+		redefine
+			default_create
+		end
+
+feature {NONE} -- Initialization
+
+	default_create
+		do
+			Precursor
+			create filters.make (0)
+			filters.force (create {VIDEO_CONTENT_FILTER})
+		end
+
+feature -- Access
+
+	name: STRING = "video_html"
+
+	title: STRING_8 = "Video HTML content"
+
+	filters: ARRAYED_LIST [CONTENT_FILTER]
+
+end
diff --git a/modules/embedded_video/test/test_content_filter_set.e b/modules/embedded_video/test/test_content_filter_set.e
new file mode 100644
index 0000000..b4aaba4
--- /dev/null
+++ b/modules/embedded_video/test/test_content_filter_set.e
@@ -0,0 +1,183 @@
+note
+	description: "[
+		Eiffel tests that can be executed by testing tool.
+	]"
+	author: "EiffelStudio test wizard"
+	date: "$Date: 2015-07-10 13:38:10 +0200 (ven., 10 juil. 2015) $"
+	revision: "$Revision: 97687 $"
+	testing: "type/manual"
+
+class
+	TEST_CONTENT_FILTER_SET
+
+inherit
+	EQA_TEST_SET
+
+feature -- Test routines
+
+	test_video_filter
+			-- New test routine
+		local
+			f: VIDEO_CONTENT_FILTER
+			text: STRING
+			expected_text: STRING
+		do
+			text := "[video:https://www.youtube.com/embed/jBMOSSnCMCk]"
+			expected_text := "<iframe width=%"420%" height=%"315%"%Nsrc=%"https://www.youtube.com/embed/jBMOSSnCMCk%">%N</iframe>"
+			create f
+			f.filter (text)
+			assert ("expected iframe with video", text.same_string (expected_text))
+		end
+
+
+	test_video_filter_2
+			-- New test routine
+		local
+			f: VIDEO_CONTENT_FILTER
+			text: STRING
+			expected_text: STRING
+		do
+			text := "[ video :  https://www.youtube.com/embed/jBMOSSnCMCk   ]"
+			expected_text := "<iframe width=%"420%" height=%"315%"%Nsrc=%"https://www.youtube.com/embed/jBMOSSnCMCk%">%N</iframe>"
+			create f
+			f.filter (text)
+			assert ("expected iframe with video", text.same_string (expected_text))
+		end
+
+
+	test_video_filter_3
+			-- New test routine
+		local
+			f: VIDEO_CONTENT_FILTER
+			text: STRING
+			expected_text: STRING
+		do
+			text := "[ video :https://www.youtube.com/embed/jBMOSSnCMCk   ]"
+			expected_text := "<iframe width=%"420%" height=%"315%"%Nsrc=%"https://www.youtube.com/embed/jBMOSSnCMCk%">%N</iframe>"
+			create f
+			f.filter (text)
+			assert ("expected iframe with video", text.same_string (expected_text))
+		end
+
+
+	test_video_filter_4
+			-- New test routine
+		local
+			f: VIDEO_CONTENT_FILTER
+			text: STRING
+			expected_text: STRING
+		do
+			text := "[ video :https://www.youtube.com/embed/jBMOSSnCMCk   height:425]"
+			expected_text := "<iframe width=%"420%" height=%"425%"%Nsrc=%"https://www.youtube.com/embed/jBMOSSnCMCk%">%N</iframe>"
+			create f
+			f.filter (text)
+			assert ("expected iframe with video", text.same_string (expected_text))
+		end
+
+
+	test_video_filter_5
+			-- New test routine
+		local
+			f: VIDEO_CONTENT_FILTER
+			text: STRING
+			expected_text: STRING
+		do
+			text := "[ video :https://www.youtube.com/embed/jBMOSSnCMCk   height :  425]"
+			expected_text := "<iframe width=%"420%" height=%"425%"%Nsrc=%"https://www.youtube.com/embed/jBMOSSnCMCk%">%N</iframe>"
+			create f
+			f.filter (text)
+			assert ("expected iframe with video", text.same_string (expected_text))
+		end
+
+
+	test_video_filter_6
+			-- New test routine
+		local
+			f: VIDEO_CONTENT_FILTER
+			text: STRING
+			expected_text: STRING
+		do
+			text := "[ video :https://www.youtube.com/embed/jBMOSSnCMCk   height :  425 width:   425]"
+			expected_text := "<iframe width=%"425%" height=%"425%"%Nsrc=%"https://www.youtube.com/embed/jBMOSSnCMCk%">%N</iframe>"
+			create f
+			f.filter (text)
+			assert ("expected iframe with video", text.same_string (expected_text))
+		end
+
+	test_video_filter_7
+			-- New test routine
+		local
+			f: VIDEO_CONTENT_FILTER
+			text: STRING
+			expected_text: STRING
+		do
+			text := "[video:https://www.youtube.com/embed/jBMOSSnCMCk height:425 width:425]"
+			expected_text := "<iframe width=%"425%" height=%"425%"%Nsrc=%"https://www.youtube.com/embed/jBMOSSnCMCk%">%N</iframe>"
+			create f
+			f.filter (text)
+			assert ("expected iframe with video", text.same_string (expected_text))
+		end
+
+
+	test_video_filter_8
+			-- New test routine
+		local
+			f: VIDEO_CONTENT_FILTER
+			text: STRING
+			expected_text: STRING
+		do
+			text := "[height:425 width:425 video:https://www.youtube.com/embed/jBMOSSnCMCk ]"
+			expected_text := "<iframe width=%"425%" height=%"425%"%Nsrc=%"https://www.youtube.com/embed/jBMOSSnCMCk%">%N</iframe>"
+			create f
+			f.filter (text)
+			assert ("expected iframe with video", text.same_string (expected_text))
+		end
+
+
+	test_video_filter_9
+			-- New test routine
+		local
+			f: VIDEO_CONTENT_FILTER
+			text: STRING
+			expected_text: STRING
+		do
+			text := "[ width:425  video:https://www.youtube.com/embed/jBMOSSnCMCk  height:425]"
+			expected_text := "<iframe width=%"425%" height=%"425%"%Nsrc=%"https://www.youtube.com/embed/jBMOSSnCMCk%">%N</iframe>"
+			create f
+			f.filter (text)
+			assert ("expected iframe with video", text.same_string (expected_text))
+		end
+
+	test_video_filter_10
+			-- New test routine
+		local
+			f: VIDEO_CONTENT_FILTER
+			text: STRING
+			expected_text: STRING
+		do
+			text := "[ wrong:425  video:https://www.youtube.com/embed/jBMOSSnCMCk  height:425]"
+			expected_text := "<iframe width=%"420%" height=%"425%"%Nsrc=%"https://www.youtube.com/embed/jBMOSSnCMCk%">%N</iframe>"
+			create f
+			f.filter (text)
+			assert ("expected iframe with video", text.same_string (expected_text))
+		end
+
+
+	test_video_filter_11
+			-- New test routine
+		local
+			f: VIDEO_CONTENT_FILTER
+			text: STRING
+			expected_text: STRING
+		do
+			text := "[wrong hello:1020 ]"
+			expected_text := "[wrong hello:1020 ]"
+			create f
+			f.filter (text)
+			assert ("expected iframe with video", text.same_string (expected_text))
+		end
+
+
+end
+
+
diff --git a/modules/embedded_video/test/testing-safe.ecf b/modules/embedded_video/test/testing-safe.ecf
new file mode 100644
index 0000000..cf818e4
--- /dev/null
+++ b/modules/embedded_video/test/testing-safe.ecf
@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<redirection xmlns="http://www.eiffel.com/developers/xml/configuration-1-16-0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.eiffel.com/developers/xml/configuration-1-16-0 http://www.eiffel.com/developers/xml/configuration-1-16-0.xsd" uuid="BD491995-C14C-4413-B09A-C1B4EDDA3116" message="Obsolete: use testing.ecf !" location="testing.ecf">
+</redirection>
diff --git a/modules/embedded_video/test/testing.ecf b/modules/embedded_video/test/testing.ecf
new file mode 100644
index 0000000..8d9b47c
--- /dev/null
+++ b/modules/embedded_video/test/testing.ecf
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<system xmlns="http://www.eiffel.com/developers/xml/configuration-1-16-0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.eiffel.com/developers/xml/configuration-1-16-0 http://www.eiffel.com/developers/xml/configuration-1-16-0.xsd" name="embedded_video_testing" uuid="BD491995-C14C-4413-B09A-C1B4EDDA3116">
+	<target name="embedded_video_testing">
+		<root class="ANY" feature="default_create"/>
+		<file_rule>
+			<exclude>/.git$</exclude>
+			<exclude>/.svn$</exclude>
+			<exclude>/EIFGENs$</exclude>
+		</file_rule>
+		<option warning="true">
+		</option>
+		<capability>
+			<concurrency use="none"/>
+		</capability>
+		<library name="base" location="$ISE_LIBRARY\library\base\base.ecf"/>
+		<library name="embeded_module" location="..\video.ecf"/>
+		<library name="testing" location="$ISE_LIBRARY\library\testing\testing.ecf"/>
+		<library name="text_filter" location="$ISE_LIBRARY\unstable\library\text\text_filter\text_filter.ecf"/>
+		<tests name="src" location=".\"/>
+	</target>
+</system>
diff --git a/modules/files/cms_files_module.e b/modules/files/cms_files_module.e
index 8f64d5d..b48c3a5 100644
--- a/modules/files/cms_files_module.e
+++ b/modules/files/cms_files_module.e
@@ -97,7 +97,7 @@ feature -- Access: router
 		do
 			map_uri_template_agent (a_router, "/" + uploads_location, agent execute_upload (?, ?, a_api), Void) -- Accepts any method GET, HEAD, POST, PUT, DELETE, ...
 			map_uri_template_agent (a_router, "/" + uploads_location + "{filename}", agent display_uploaded_file_info (?, ?, a_api), a_router.methods_get)
-			map_uri_template_agent (a_router, "/" + uploads_location + "remove/{filename}", agent remove_file (?, ?, a_api), a_router.methods_get)
+			map_uri_template_agent (a_router, "/" + uploads_location + "{filename}/remove", agent remove_file (?, ?, a_api), a_router.methods_get)
 		end
 
 	uploads_location: STRING = "upload/"
@@ -133,6 +133,7 @@ feature -- Handler
 		local
 			body: STRING_8
 			r: CMS_RESPONSE
+			l_file_url: STRING_8
 			f: CMS_FILE
 			md: detachable CMS_FILE_METADATA
 			fn: READABLE_STRING_32
@@ -193,12 +194,18 @@ feature -- Handler
 					else
 						body.append ("NA")
 					end
+					body.append ("<br/>%N")
+
+						--| File Url
+					l_file_url := req.script_url ("/" + l_files_api.file_link (f).location)
+					body.append ("<strong>File URL: </strong>")
+					body.append (l_file_url)
 					body.append ("<br/><br/>%N")
 
-					body.append ("<a class=%"button%" href=%"" + req.script_url ("/" + l_files_api.file_link (f).location) + "%">Download</a>%N")
-					body.append ("<a class=%"button%" href=%"" + req.script_url ("/" + uploads_location + "remove/" + f.filename) + "%">Remove</a>%N")
+					body.append ("<a class=%"button%" href=%"" + l_file_url + "%">Download</a>%N")
+					body.append ("<a class=%"button%" href=%"" + req.script_url ("/" + uploads_location + f.filename + "/remove") + "%">Remove</a>%N")
 					body.append ("</div>%N") -- metadata
-
+					body.append ("<br/>%N")
 					body.append ("<div class=%"overview%">")
 					if
 						attached f.relative_path.extension as ext and then
@@ -425,7 +432,7 @@ feature -- Handler
 
 									-- add remove button
 								a_output.append ("<td>")
-								a_output.append ("<a class=%"button%" href=%"" + req.script_url ("/" + uploads_location + "remove/" + f.filename) + "%">Remove</a>%N")
+								a_output.append ("<a class=%"button%" href=%"" + req.script_url ("/" + uploads_location + f.filename + "/remove") + "%">Remove</a>%N")
 								a_output.append ("</td>%N")
 
 								a_output.append ("</tr>%N")
diff --git a/modules/node/submodules/page/cms_page_api.e b/modules/node/submodules/page/cms_page_api.e
index 66dbe80..a76e5b2 100644
--- a/modules/node/submodules/page/cms_page_api.e
+++ b/modules/node/submodules/page/cms_page_api.e
@@ -54,12 +54,6 @@ feature {NONE} -- Initialization
 				-- Initialize node content types.			
 			create ct
 			page_content_type := ct
-				--| For now, add all available formats to content type `ct'.
-			across
-				cms_api.formats as ic
-			loop
-				ct.extend_format (ic.item)
-			end
 			node_api.add_node_type (ct)
 			node_api.add_node_type_webform_manager (create {CMS_PAGE_NODE_TYPE_WEBFORM_MANAGER}.make (ct, Current))
 		end
diff --git a/modules/wikitext/wikitext_module.e b/modules/wikitext/wikitext_module.e
index 6eff083..80bda1f 100644
--- a/modules/wikitext/wikitext_module.e
+++ b/modules/wikitext/wikitext_module.e
@@ -39,18 +39,12 @@ feature {CMS_API} -- Module Initialization
 
 	initialize (api: CMS_API)
 			-- <Precursor>
-		local
-			f: CMS_FORMAT
 		do
 			Precursor (api)
 
-			create f.make_from_format (create {WIKITEXT_FORMAT})
-			api.formats.extend (f)
-				-- FIXME!!!
-			across
-				api.content_types as ic
-			loop
-				ic.item.extend_format (f)
+			api.content_filters.extend (create {WIKITEXT_FILTER})
+			if api.format ({WIKITEXT_FORMAT}.name) = Void then
+				api.formats.extend (api.new_format ("wikitext", "Wikitext rendered as HTML", <<{WIKITEXT_FILTER}.name>>))
 			end
 		end
 
diff --git a/src/kernel/content/format/cms_format.e b/src/kernel/content/format/cms_format.e
index 49a16e9..5adb6d6 100644
--- a/src/kernel/content/format/cms_format.e
+++ b/src/kernel/content/format/cms_format.e
@@ -10,6 +10,8 @@ class
 inherit
 	CONTENT_FORMAT
 
+	DEBUG_OUTPUT
+
 create
 	make,
 	make_from_format
@@ -55,6 +57,27 @@ feature -- Access
 			end
 		end
 
+feature -- Status report
+
+	debug_output: STRING
+			-- String that should be displayed in debugger to represent `Current'.
+		do
+			create Result.make_from_string (name)
+			if not title.same_string (name) then
+				Result.append_character (' ')
+				Result.append_character ('"')
+				Result.append (title)
+				Result.append_character ('"')
+			end
+			Result.append_character (' ')
+			across
+				filters as ic
+			loop
+				Result.append_character ('+')
+				Result.append (ic.item.name)
+			end
+		end
+
 feature -- Element change
 
 	set_title (a_title: detachable READABLE_STRING_8)
@@ -108,6 +131,6 @@ feature -- Element change
 
 
 note
-	copyright: "2011-2015, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
+	copyright: "2011-2017, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
 end
diff --git a/src/kernel/content/format/cms_formats.e b/src/kernel/content/format/cms_formats.e
index 02457bc..3015dfb 100644
--- a/src/kernel/content/format/cms_formats.e
+++ b/src/kernel/content/format/cms_formats.e
@@ -36,8 +36,33 @@ feature -- Access
 			end
 		end
 
+	is_empty: BOOLEAN
+		do
+			Result := count = 0
+		end
+
+	count: INTEGER
+		do
+			Result := items.count
+		end
+
 feature -- Element change
 
+	remove (a_name: READABLE_STRING_GENERAL)
+		do
+			from
+				items.start
+			until
+				items.after
+			loop
+				if a_name.is_case_insensitive_equal (items.item.name) then
+					items.remove
+				else
+					items.forth
+				end
+			end
+		end
+
 	extend (f: CMS_FORMAT)
 			-- Add format `f' to available formats.
 		do
@@ -46,6 +71,12 @@ feature -- Element change
 			has_format: item (f.name) = f
 		end
 
+	wipe_out
+			-- Wipe out the items.
+		do
+			items.wipe_out
+		end
+
 feature -- Access
 
 	new_cursor: ITERATION_CURSOR [CMS_FORMAT]
@@ -79,7 +110,7 @@ invariant
 	items /= Void
 
 note
-	copyright: "2011-2015, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
+	copyright: "2011-2017, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
 	source: "[
 			Eiffel Software
diff --git a/src/service/cms_api.e b/src/service/cms_api.e
index 4c7ab49..3442596 100644
--- a/src/service/cms_api.e
+++ b/src/service/cms_api.e
@@ -54,11 +54,12 @@ feature {NONE} -- Initialize
 			s := setup.administration_base_path
 			administration_base_path_location := s.shared_substring (2, s.count)
 
-				-- Initialize formats.
-			initialize_formats
 				-- Initialize contents.
 			initialize_content_types
 
+				-- Initialize filters and formats.
+			initialize_content_filters_and_formats
+
 				-- Initialize storage.
 			if attached setup.storage (error_handler) as l_storage then
 				storage := l_storage
@@ -109,6 +110,7 @@ feature {NONE} -- Initialize
 			end
 
 				-- hooks initialization, is done after site/admin switch.
+				-- See `initialize_execution`
 		end
 
 	initialize_site_url
@@ -147,21 +149,157 @@ feature {NONE} -- Initialize
 			create content_type_webform_managers.make (1)
 		end
 
-	initialize_formats
-			-- Initialize content formats.
+	initialize_content_filters_and_formats
+			-- Initialize content filters and formats.
 		local
-			f: CMS_FORMAT
+			l_filters: like content_filters
 		do
+				-- Initialize built-in content filters
+			create l_filters.make (4)
+			content_filters := l_filters
+			l_filters.extend (create {HTML_TO_TEXT_CONTENT_FILTER})
+			l_filters.extend (create {LINE_BREAK_TO_HTML_CONTENT_FILTER})
+			l_filters.extend (create {URL_CONTENT_FILTER})
+			l_filters.extend (create {HTML_CONTENT_FILTER})
+
+
 				-- Initialize built-in formats
 			create formats.make (4)
-			create f.make_from_format (create {PLAIN_TEXT_CONTENT_FORMAT})
-			formats.extend (f)
-			create f.make_from_format (create {FILTERED_HTML_CONTENT_FORMAT})
-			formats.extend (f)
-			create f.make_from_format (create {FULL_HTML_CONTENT_FORMAT})
-			formats.extend (f)
-			create f.make ("cms_editor", "CMS HTML content")
-			formats.extend (f)
+		end
+
+	setup_formats
+			-- Initialize content filters and formats.
+		local
+			l_formats: like formats
+		do
+			load_formats
+			l_formats := formats
+			if l_formats.count = 0 then
+					-- Setup built-in formats
+
+					-- plain_text: html_to_text + line_break_converter
+				l_formats.extend (new_format ("plain_text", "Plain text", <<{HTML_TO_TEXT_CONTENT_FILTER}.name, {LINE_BREAK_TO_HTML_CONTENT_FILTER}.name>>))
+
+					-- full_html: url
+				l_formats.extend (new_format ("full_html", "Full HTML", <<{URL_CONTENT_FILTER}.name>>))
+
+					-- filtered_html: url + html_filter + line_break_converter
+				l_formats.extend (new_format ("filtered_html", "Filtered HTML", <<{URL_CONTENT_FILTER}.name, {HTML_CONTENT_FILTER}.name, {LINE_BREAK_TO_HTML_CONTENT_FILTER}.name>>))
+
+					-- CMS Editor!
+				l_formats.extend (new_format ("cms_editor", "CMS HTML content", Void))
+
+				save_formats
+			end
+		end
+
+feature {CMS_API_ACCESS} -- CMS Formats management
+
+	load_formats
+		local
+			f: CMS_FORMAT
+			jp: JSON_PARSER
+			s: STRING_32
+			l_name, l_title: READABLE_STRING_8
+		do
+			formats.wipe_out
+			if
+				attached storage.custom_value ("cms.formats", "api-formats") as v_formats and then
+				v_formats.is_valid_as_string_8
+			then
+				create jp.make_with_string (v_formats.to_string_8)
+				jp.parse_content
+				if jp.is_parsed and then jp.is_valid and then attached jp.parsed_json_object as j_formats then
+						-- { "plain_text": { "title": "Plain text", "filters": "plain_text+foobar+toto"}, ...}
+					across
+						j_formats as ic
+					loop
+						if attached {JSON_OBJECT} ic.item as j_format then
+							l_name := ic.key.unescaped_string_8
+							if attached {JSON_STRING} j_format.item ("title") as j_title then
+								l_title := j_title.unescaped_string_8
+							else
+								l_title := l_name
+							end
+							if attached {JSON_STRING} j_format.item ("filters") as j_filters then
+								s := j_filters.unescaped_string_32
+								f := new_format (l_name, l_title, s.split ('+'))
+							else
+								f := new_format (l_name, l_title, Void)
+							end
+							formats.extend (f)
+							if attached {JSON_STRING} j_format.item ("types") as j_types then
+								s := j_types.unescaped_string_32
+								across
+									s.split ('+') as s_ic
+								loop
+									if attached content_type (s_ic.item) as ct then
+										ct.extend_format (f)
+									end
+								end
+							end
+						end
+					end
+				end
+			end
+		end
+
+	save_formats
+			-- Save `formats`.
+		local
+			f: CMS_FORMAT
+			jp: JSON_PARSER
+			cfg: JSON_CONFIG
+			j,ji: JSON_OBJECT
+			s: STRING_32
+			l_name, l_title: READABLE_STRING_8
+			ct: CMS_CONTENT_TYPE
+		do
+				-- { "plain_text": { "title": "Plain text", "filters": "plain_text+foobar+toto"}, ...}
+			create j.make_empty
+			across
+				formats as ic
+			loop
+				f := ic.item
+				create ji.make
+				ji.put_string (f.title, "title")
+
+				create s.make_empty
+				across
+					f.filters as f_ic
+				loop
+					if not s.is_empty then
+						s.append ("+")
+					end
+					s.append (f_ic.item.name)
+				end
+				ji.put_string (s, "filters")
+
+				create s.make_empty
+				across
+					content_types as ct_ic
+				loop
+					ct := ct_ic.item
+					if ct.has_format (f.name) then
+						if not s.is_empty then
+							s.append ("+")
+						end
+						s.append (ct.name)
+					end
+				end
+				ji.put_string (s, "types")
+
+				j.put (ji, f.name)
+			end
+			storage.set_custom_value ("cms.formats", j.representation, "api-formats")
+		end
+
+feature -- Execution initialization
+
+	initialize_execution
+		do
+			setup_hooks
+			setup_formats
 		end
 
 feature {CMS_ACCESS} -- Module management		
@@ -256,11 +394,15 @@ feature -- Access: url
 	administration_path (a_relative_path: detachable READABLE_STRING_8): STRING_8
 		do
 			create Result.make_from_string (setup.administration_base_path)
-			if a_relative_path /= Void and then not a_relative_path.is_empty then
-				if a_relative_path[1] /= '/' then
+			if a_relative_path /= Void then
+				if a_relative_path.is_empty then
 					Result.append_character ('/')
+				else
+					if a_relative_path[1] /= '/' then
+						Result.append_character ('/')
+					end
+					Result.append (a_relative_path)
 				end
-				Result.append (a_relative_path)
 			end
 		end
 
@@ -270,8 +412,14 @@ feature -- Access: url
 		do
 			create Result.make_from_string (administration_base_path_location)
 			if a_relative_location /= Void then
-				Result.append_character ('/')
-				Result.append (a_relative_location)
+				if a_relative_location.is_empty then
+					Result.append_character ('/')
+				else
+					if a_relative_location[1] /= '/' then
+						Result.append_character ('/')
+					end
+					Result.append (a_relative_location)
+				end
 			end
 		end
 
@@ -282,9 +430,11 @@ feature {NONE} -- Url implementation.
 
 feature -- CMS links
 
-	administration_link (a_title: READABLE_STRING_GENERAL; a_location: READABLE_STRING_8): CMS_LOCAL_LINK
+	administration_link (a_title: READABLE_STRING_GENERAL; a_relative_location: detachable READABLE_STRING_8): CMS_LOCAL_LINK
+		require
+			no_first_slash: a_relative_location = Void or else not a_relative_location.starts_with_general ("/")
 		do
-			Result := local_link (a_title, administration_path_location (a_location))
+			Result := local_link (a_title, administration_path_location (a_relative_location))
 		end
 
 	local_link (a_title: READABLE_STRING_GENERAL; a_location: READABLE_STRING_8): CMS_LOCAL_LINK
@@ -425,17 +575,35 @@ feature -- Content type webform
 			end
 		end
 
-feature -- Formats
+feature -- Filters and Formats
+
+	content_filters: CMS_CONTENT_FILTERS
+			-- Available content filters.
 
 	formats: CMS_FORMATS
 			-- Available content formats.
 
-	format (a_format_name: detachable READABLE_STRING_GENERAL): detachable CONTENT_FORMAT
+	format (a_format_name: detachable READABLE_STRING_GENERAL): detachable CMS_FORMAT
 			-- Content format name `a_format_name' if any.
 		do
 			Result := formats.item (a_format_name)
 		end
 
+	new_format (a_name: READABLE_STRING_8; a_title: READABLE_STRING_8; a_filter_names: detachable ITERABLE [READABLE_STRING_GENERAL]): CMS_FORMAT
+			-- New cms content format named `a_name`, with `a_title`, and composed from `a_filter_names`.
+		do
+			create Result.make (a_name, a_title)
+			if a_filter_names /= Void then
+				across
+					a_filter_names as ic
+				loop
+					if attached content_filters.item (ic.item) as f then
+						Result.add_filter (f)
+					end
+				end
+			end
+		end
+
 feature -- Status Report
 
 	has_error: BOOLEAN
diff --git a/src/service/cms_execution.e b/src/service/cms_execution.e
index 0054e0b..50eec86 100644
--- a/src/service/cms_execution.e
+++ b/src/service/cms_execution.e
@@ -160,7 +160,7 @@ feature -- Settings: router
 			l_api.logger.put_debug (generator + ".setup_router_for_administration", Void)
 
 				-- Configure root of api handler.
-			l_router.set_base_url (l_api.administration_path (""))
+			l_router.set_base_url (l_api.administration_path (Void))
 
 				-- Include routes from modules.
 			across
@@ -244,7 +244,7 @@ feature -- Request execution
 	initialize_site_execution
 			-- Initialize for site execution.
 		do
-			api.setup_hooks
+			api.initialize_execution
 			setup_router
 		end
 
@@ -252,7 +252,7 @@ feature -- Request execution
 			-- Initialize for administration execution.	
 		do
 			api.switch_to_administration_mode
-			api.setup_hooks
+			api.initialize_execution
 			setup_router_for_administration
 		end
 
diff --git a/src/service/content/cms_content_type.e b/src/service/content/cms_content_type.e
index ba72ab1..a590610 100644
--- a/src/service/content/cms_content_type.e
+++ b/src/service/content/cms_content_type.e
@@ -31,12 +31,18 @@ feature -- Access
 
 feature -- Access
 
+	has_format (a_name: READABLE_STRING_GENERAL): BOOLEAN
+			-- Is Current content type supporting format `a_name`?
+		do
+			Result := format (a_name) /= Void
+		end
+
 	available_formats: LIST [CONTENT_FORMAT]
 			-- Available formats for Current type.
 		deferred
 		end
 
-	format (a_name: READABLE_STRING_8): detachable CONTENT_FORMAT
+	format (a_name: READABLE_STRING_GENERAL): detachable CONTENT_FORMAT
 			-- Format named `a_name', if available.
 		do
 			across
@@ -87,6 +93,6 @@ feature -- Element change
 		end
 
 note
-	copyright: "2011-2015, Javier Velilla, Jocelyn Fiat, Eiffel Software and others"
+	copyright: "2011-2017, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
 end
diff --git a/src/service/handler/cms_admin_install_handler.e b/src/service/handler/cms_admin_install_handler.e
index c696ef0..0eaf680 100644
--- a/src/service/handler/cms_admin_install_handler.e
+++ b/src/service/handler/cms_admin_install_handler.e
@@ -105,7 +105,7 @@ feature -- HTTP Methods
 					s.append ("</li>%N")
 				end
 				s.append ("</ul>")
-				s.append ("<div>Back to the " + r.link ("Administration", api.administration_path (""), Void) + " ...</div>")
+				s.append ("<div>Back to the " + r.link ("Administration", api.administration_path (Void), Void) + " ...</div>")
 				r.set_main_content (s)
 			end
 			r.set_title (r.translation ("CMS Installation ...", Void))
diff --git a/src/service/response/cms_response.e b/src/service/response/cms_response.e
index 4c212a7..0d1ffca 100644
--- a/src/service/response/cms_response.e
+++ b/src/service/response/cms_response.e
@@ -1333,9 +1333,11 @@ feature -- Generation
 
 feature -- Helpers: cms link
 
-	administration_link (a_title: READABLE_STRING_GENERAL; a_location: READABLE_STRING_8): CMS_LOCAL_LINK
+	administration_link (a_title: READABLE_STRING_GENERAL; a_relative_location: detachable READABLE_STRING_8): CMS_LOCAL_LINK
+		require
+			no_first_slash: a_relative_location = Void or else not a_relative_location.starts_with_general ("/")
 		do
-			Result := api.administration_link (a_title, a_location)
+			Result := api.administration_link (a_title, a_relative_location)
 		end
 
 	local_link (a_title: READABLE_STRING_GENERAL; a_location: READABLE_STRING_8): CMS_LOCAL_LINK