diff --git a/docs/Makefile b/docs/Makefile
index c4dde0a..075e212 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -1,6 +1,6 @@
 # jqt documentation management
 
-include make.d/config.make
+include make.d/prelude.make
 
 ########################################################################
 # Globals and setup
@@ -19,20 +19,20 @@ Version := $(shell cat ../VERSION)
 # Defined in globals.make
 # =======================
 # Variables:
-#    __globals__
-#    Assets
-#    Blocks
-#    Content
-#    Data
-#    Destination
-#    Layouts
-#    Styles
+#	__globals__
+#	Assets
+#	Blocks
+#	Content
+#	Data
+#	Destination
+#	Layouts
+#	Styles
 
 # If not clobbering
 ifneq (clobber,$(MAKECMDGOALS))
 
 # Define targets for basic metadata
-include make.d/metadata.make
+include make.d/config.make
 
 # Defined in metadata.make
 # ========================
@@ -41,6 +41,7 @@ include make.d/metadata.make
 #	$(Metadata)/config.json
 #	$(Metadata)/site.json
 #	$(Metadata)/globals.make
+#	$(Metadata)/pages/**.json
 
 # Build metadata from introspection
 ifdef __globals__
@@ -57,7 +58,8 @@ endif
 #	NodesJSON
 # Targets:
 # 	$(Destination)
-# 	all paths from $(Destination) and $(Metadata)
+# 	all paths at $(Destination) and $(Metadata)
+# 	each page from his metadata
 
 endif # not clobbering
 
@@ -132,8 +134,8 @@ Targets    := $(Pages) $(Files) $(ManPage)
 $(Pages):				\
 	$(Blocks)/*/markup.html		\
 	$(Blocks)/filters.jq		\
-	$(Content)/LINKS.txt		\
 	$(Content)/macros.m		\
+	$(Content)/LINKS.txt		\
 	$(Metadata)/snippets.json	\
 	$(Metadata)/config.json		\
 
@@ -141,8 +143,8 @@ $(Pages):				\
 other_pages := $(filter-out $(HomePage),$(Pages))
 $(other_pages):			\
 	$(Content)/FLOW.txt	\
-	$(Layouts)/page.html	\
 	$(Content)/opt/*.txt	\
+	$(Layouts)/page.html	\
 
 $(HomePage) 			\
 $(Destination)/structure.html:	\
@@ -162,12 +164,10 @@ endif # __globals__
 
 ifdef __globals__
 
-# Default target
+# Default target (always try to copy assets)
 all: $(Targets)
-# Copy assets
 	@cp --verbose --recursive --update $(Assets)/* $(Destination) \
 	| sed "s/^.*-> ./==> /;s/.$$//"
-# All done
 	@echo 1>&2 'Imprimatur.'
 
 # Snippets
@@ -238,10 +238,14 @@ endif # __globals__
 # External utilities
 ########################################################################
 
+ifdef __globals__
+
 # help and other targets
 include make.d/tools.make
 
 # HTML 5 validation
 include make.d/vnu.make
 
+endif # __globals__
+
 # vim:ai:sw=8:ts=8:noet:fileencoding=utf8:syntax=make
diff --git a/docs/content/content.md b/docs/content/content.md
index 99e0948..3ba9681 100644
--- a/docs/content/content.md
+++ b/docs/content/content.md
@@ -4,6 +4,7 @@ title: Authoring content in jqt using MarkDown
 description: jqt transforms MarkDown documents to HTML using Pandoc.
 keywords:  jqt, markdown, pandoc, gpp, preprocessing, authoring content
 updated: "2016-08-28T10:27:09Z"
+use: [content/macros.m, content/LINKS.txt, content/FLOW.txt, "content/opt/[4DdiT].txt"]
 ---
 <%include content/macros.m>&
 <%include content/LINKS.txt>&
diff --git a/docs/content/data.md b/docs/content/data.md
index e5186bb..4bee361 100644
--- a/docs/content/data.md
+++ b/docs/content/data.md
@@ -4,6 +4,7 @@ title: Managing the data model with jqt
 description: jqt combines one template with one MarkDown document and a data model.
 keywords:  jqt, JSON, YAML, gpp, preprocessing, data model
 updated: "2016-08-28T10:27:09Z"
+use: [content/macros.m, content/LINKS.txt, content/FLOW.txt, "content/opt/[DeIMmnPRT].txt"]
 ---
 <%include content/macros.m>&
 <%include content/LINKS.txt>&
diff --git a/docs/content/engine.md b/docs/content/engine.md
index dfa6e34..3ae3a6c 100644
--- a/docs/content/engine.md
+++ b/docs/content/engine.md
@@ -4,6 +4,7 @@ title: The jqt template engine
 description: jqt orchestrates several shell utilities to transform MarkDown text and YAML or JSON data into a final HTML page.
 keywords:  jqt, jq, YAML, gpp, preprocessing, template engine
 updated: "2016-08-28T10:27:09Z"
+use: [content/macros.m, content/LINKS.txt, content/FLOW.txt, "content/opt/[4CDdeHhIijLMmnPprSTtVw].txt"]
 ---
 <%include content/macros.m>&
 <%include content/LINKS.txt>&
diff --git a/docs/content/index.md b/docs/content/index.md
index 1b2f6f8..2cd02ce 100644
--- a/docs/content/index.md
+++ b/docs/content/index.md
@@ -4,6 +4,7 @@ title: Welcome to jqt
 description: Could be jq the basis for a web template engine?
 keywords:  jqt, jq, template engine
 updated: "2016-08-28T10:27:09Z"
+use: [content/macros.m, content/LINKS.txt, content/EXAMPLE.txt]
 ---
 <%include content/macros.m>&
 <%include content/LINKS.txt>&
diff --git a/docs/content/structure.md b/docs/content/structure.md
index 4668a13..1ef28fa 100644
--- a/docs/content/structure.md
+++ b/docs/content/structure.md
@@ -4,6 +4,7 @@ title: Defining the page structure with jqt
 description: Web pages structure is defined by the HTML macros.
 keywords:  jqt, jq, gpp, preprocessing, template engine
 updated: "2016-08-28T10:27:09Z"
+use: [content/macros.m, content/LINKS.txt, content/EXAMPLE.txt, content/FLOW.txt, "content/opt/[DIijL].txt"]
 ---
 <%include content/macros.m>&
 <%include content/LINKS.txt>&
diff --git a/docs/make.d/config.make b/docs/make.d/config.make
index 4b14241..e8e92cf 100644
--- a/docs/make.d/config.make
+++ b/docs/make.d/config.make
@@ -2,92 +2,83 @@
 # Configuration
 ########################################################################
 
-# Exported macros:
-#	comma
-#	empty
-#	space
-#	rest
+# Imported variables:
+#	Metadata
+#	Version
+# Exported targets:
+# 	$(Metadata)
+#	$(Metadata)/config.json
+#	$(Metadata)/site.json
+#	$(Metadata)/globals.make
+# Order of dependencies:
+# 	globals.make => site.json => config.json => config.yaml
+
+# Metadata directory
+$(Metadata):
+	$(info ==> $@)
+	@mkdir --parents $@ >/dev/null 2>&1 || true
 
 #
-# Prerequisites
+# Target files
 #
 
-# We are using some of the newest GNU Make features... so require GNU
-# Make version >= 3.82
-version_test := $(filter 3.82,$(firstword $(sort $(MAKE_VERSION) 3.82)))
-ifndef version_test
-$(error GNU Make version $(MAKE_VERSION); version >= 3.82 is needed)
-endif
-
-# Only one target at the same time
-MAKECMDGOALS ?= all
-
-# Check 'root' intentions
-ifeq (,$(filter install uninstall,$(MAKECMDGOALS)))
-ifeq (0,$(shell id --user))
-$(error Root only can make "(un)install" targets)
-endif
-SUDO := 
-else
-SUDO := sudo
-endif
-
-# Target 'clobber' must be alone
-ifeq (clobber,$(filter clobber,$(MAKECMDGOALS)))
-ifneq (1,$(words $(MAKECMDGOALS)))
-$(error Target "clobber" must be alone)
-endif
-endif
-
-#
-# Parameters
-#
+# Create $(Metadata)/config.json
+# Input is user defined config.yaml or config.json.
+ifeq (config.yaml, $(wildcard config.yaml))
 
-# Disable builtins.
-MAKEFLAGS += --no-builtin-rules
-MAKEFLAGS += --no-builtin-variables
+# Convert config.yaml to $(Metadata)/config.json
+$(Metadata)/config.json: config.yaml \
+| $(Metadata)
+	$(info ==> $@)
+	@yaml2json < $< > $@
 
-# Warn when an undefined variable is referenced.
-MAKEFLAGS += --warn-undefined-variables
+else ifeq (config.json, $(wildcard config.json))
 
-# Make will not print the recipe used to remake files.
-#.SILENT:
+# Convert config.json to $(Metadata)/config.json
+$(Metadata)/config.json: config.json \
+| $(Metadata)
+	$(info ==> $@)
+	@jqt -Pjson < $< > $@
 
-# Eliminate use of the built-in implicit rules. Also clear out the
-# default list of suffixes for suffix rules.
-.SUFFIXES:
-
-# Sets the default goal to be used if no targets were specified on the
-# command line.
-.PHONY: all
-.DEFAULT_GOAL := all
-
-# Default shell: if we require GNU Make, why not require Bash?
-SHELL := /bin/bash
-
-# The argument(s) passed to the shell are taken from the variable
-# .SHELLFLAGS.
-.SHELLFLAGS := -o errexit -o pipefail -o nounset -c
-
-# Make will delete the target of a rule if it has changed and its recipe
-# exits with a nonzero exit status.
-.DELETE_ON_ERROR:
-
-# Enable a second expansion of the prerequisites
-.SECONDEXPANSION:
-
-#
-# Common macros
-#
+else
+$(error Configuration file not found)
+endif
 
-# Hacks for string manipulation
-comma := ,
-empty :=
-space := $(empty) $(empty)
+# Globals definition to mix with config.json
+define m_SITE_JSON :=
+  del(.defaults)					\
+  | . + { 						\
+  	Destination: (.Destination // "./_site"),	\
+  	Assets:      (.Assets      // "./assets"),	\
+  	Blocks:      (.Blocks      // "./blocks"),	\
+  	Content:     (.Content     // "./content"),	\
+  	Data:        (.Data        // "./data"),	\
+  	Layouts:     (.Layouts     // "./layouts"),	\
+  	Styles:      (.Styles      // "./styles"),	\
+  	Version:     (.Version     // "$(Version)")	\
+  }
+endef
 
-# Hack for list manipulation
-define rest =
-  $(wordlist 2,2147483648,$1)
+$(Metadata)/site.json: $(Metadata)/config.json
+	$(info ==> $@)
+	@jq --sort-keys '$(m_SITE_JSON)' < $< > $@
+
+# Variables to define in globals.make
+define m_GLOBALS_MAKE :=
+  "__globals__ := 1",				\
+  "Assets      := " + .Assets,			\
+  "Blocks      := " + .Blocks,			\
+  "Content     := " + .Content,			\
+  "Data        := " + .Data,			\
+  "Destination := " + .Destination,		\
+  "Layouts     := " + .Layouts,			\
+  "Styles      := " + .Styles,			\
+  "# vim:syntax=make"
 endef
 
+# Create globals.make
+$(Metadata)/globals.make: $(Metadata)/site.json
+	$(info ==> $@)
+	@jq --raw-output '$(m_GLOBALS_MAKE)' < $< > $@
+
 # vim:ai:sw=8:ts=8:noet:fileencoding=utf8:syntax=make
diff --git a/docs/make.d/introspect.make b/docs/make.d/introspect.make
index c4ff099..61d6c94 100644
--- a/docs/make.d/introspect.make
+++ b/docs/make.d/introspect.make
@@ -15,6 +15,9 @@
 # Exported targets:
 # 	$(Destination)
 # 	all paths at $(Destination) and $(Metadata)
+# Additional dependencies
+# 	each page from his metadata
+# 	each node from his metadata
 
 # Markdown documents found in the filesystem (only .md extensions)
 i_documents := $(sort $(shell find $(Content) -type f -a -name '*.md'))
@@ -26,35 +29,39 @@ i_paths := $(sort $(dir $(i_documents)))
 i_paths_destination := $(call rest,$(patsubst $(Content)%,$(Destination)%,$(i_paths)))
 
 # Paths to nodes at $(Metadata)
-i_paths_meta_nodes := $(patsubst $(Content)%,$(Metadata)/nodes%,$(i_paths))
+i_paths_metadata_nodes := $(patsubst $(Content)%,$(Metadata)/nodes%,$(i_paths))
 
 # Paths to pages at $(Metadata)
-i_paths_meta_pages := $(patsubst $(Content)%,$(Metadata)/pages%,$(i_paths))
+i_paths_metadata_pages := $(patsubst $(Content)%,$(Metadata)/pages%,$(i_paths))
 
 #
-# Make directories
+# Targets for directories
 #
 
+# Destination directory
 $(Destination):
 	$(info ==> $@)
 	@mkdir --parents $@ >/dev/null 2>&1 || true
 
-$(i_paths_destination): ## $(Destination)/% : $(Content)/%
+# $(Destination)/.../
+$(i_paths_destination):
+	$(info ==> $@)
 	@mkdir --parents $@ >/dev/null 2>&1 || true
 
-$(i_paths_meta_pages): ## $(Metadata)/pages/% : $(Content)/%
+# $(Metadata)/pages/.../
+$(i_paths_metadata_pages):
+	$(info ==> $@)
 	@mkdir --parents $@ >/dev/null 2>&1 || true
 
-$(i_paths_meta_nodes): ## $(Metadata)/nodes/% : $(Content)/%
+# $(Metadata)/nodes/.../
+$(i_paths_metadata_nodes):
+	$(info ==> $@)
 	@mkdir --parents $@ >/dev/null 2>&1 || true
 
 #
-# Global names defined
+# Exported variables
 #
 
-# All pathnames to create
-#? Paths := $(i_paths_destination) $(i_paths_meta_pages) $(i_paths_meta_nodes)
-
 # Home page
 HomePage := $(Destination)/index.html
 
@@ -68,7 +75,85 @@ PagesJSON := $(patsubst %.md,%.json,$(patsubst $(Content)%,$(Metadata)/pages%,$(
 Nodes := $(addsuffix index.html,$(i_paths_destination))
 
 # JSON for each node to generate at $(Metadata)/nodes
-NodesJSON := $(call rest,$(patsubst %/,%.json,$(i_paths_meta_nodes)))
+NodesJSON := $(call rest,$(patsubst %/,%.json,$(i_paths_metadata_nodes)))
+
+#
+# Pages metadata
+#
+
+# $(Metadata)/pages/path/to/page.json ==> path/to/page
+define i_page_id =
+$(subst $(Metadata)/pages/,,$(basename $1))
+endef
+
+# $(Metadata)/pages/path/to/page.json ==> ../+
+define i_page_base =
+$(patsubst ../../%,%,$(subst $(space),$(empty),$(patsubst %,../,$(subst /,$(space),$1))))
+endef
+
+# $(Metadata)/pages/path/to/page.json ==> page
+define i_page_name =
+$(basename $(notdir $1))
+endef
+
+# $(Metadata)/pages/path/to/page.json ==> path/to/page.html
+define i_page_url =
+$(call i_page_id,$1).html
+endef
+
+# $(Metadata)/pages/path/to/page.json ==> path/to/
+define i_page_path =
+$(dir $(call i_page_id,$1))
+endef
+
+# $(Metadata)/pages/path/to/page.json ==> path/to
+define i_page_section =
+$(patsubst %/,%,$(call i_page_path,$1))
+endef
+
+# . is a MarkDown file front matter
+define i_PAGE_JSON =
+  . + {						\
+    "id":       "$(call i_page_id,$1)",		\
+    "base":     "$(call i_page_base,$1)",	\
+    "filename": "$(call i_page_name,$1)",	\
+    "path":     "$(call i_page_path,$1)",	\
+    "url":      "$(call i_page_url,$1)",	\
+    "section":  "$(call i_page_section,$1)",	\
+    "isnode":   false,				\
+    "ispage":   true				\
+  } as $$page |					\
+  $$config[0].defaults as $$defaults |		\
+  reduce $$defaults[] as $$d			\
+    ({}; if "$(call i_page_id,$1)" | test("^" + $$d.idprefix) \
+         then . + $$d.properties		\
+         else . end) + $$page
+endef
+
+# Extract YAML front matter
+define i_extract_front_matter
+  sed -n -e '1d'		\
+  	 -e '/^---$$/q'		\
+	 -e '/^\.\.\.$$/q'	\
+	 -e '/^\#/d'		\
+	 -e 'p'
+endef
+
+# Build metadata for a page
+$(PagesJSON): $(Metadata)/pages/%.json : $(Content)/%.md \
+| $$(dir $$@)
+	$(info ==> $@)
+	@$(i_extract_front_matter) < $< 		\
+        | yaml2json					\
+        | jq --sort-keys				\
+             --slurpfile config $(Metadata)/config.json	\
+             '$(call i_PAGE_JSON,$@)' > $@
+
+# Each page depend on his metadata
+$(Pages): $(Destination)/%.html : $(Metadata)/pages/%.json
+
+# Each node depend on his metadata
+#$(Nodes): $(Destination)/%.html : $(Metadata)/nodes/%.json
 
 #########################################################################
 # Test
@@ -82,8 +167,8 @@ intro:
 	@echo 'i_paths: $(i_paths)'
 	@echo
 	@echo 'i_paths_destination: $(i_paths_destination)'
-	@echo 'i_paths_meta_nodes: $(i_paths_meta_nodes)'
-	@echo 'i_paths_meta_pages: $(i_paths_meta_pages)'
+	@echo 'i_paths_metadata_nodes: $(i_paths_metadata_nodes)'
+	@echo 'i_paths_metadata_pages: $(i_paths_metadata_pages)'
 	@echo
 	@echo 'HomePage: $(HomePage)'
 	@echo 'Pages: $(Pages)'
diff --git a/docs/make.d/metadata.make b/docs/make.d/metadata.make
deleted file mode 100644
index 21abf14..0000000
--- a/docs/make.d/metadata.make
+++ /dev/null
@@ -1,124 +0,0 @@
-########################################################################
-# Metadata
-########################################################################
-
-# Imported variables:
-#	Metadata
-#	Version
-# Exported targets:
-# 	$(Metadata)
-#	$(Metadata)/config.json
-#	$(Metadata)/site.json
-#	$(Metadata)/globals.make
-#	$(Metadata)/pages/**.json
-# Order of dependencies:
-# 	globals.make => site.json => config.json => config.yaml
-
-# Metadata directory
-$(Metadata):
-	$(info ==> $@)
-	@mkdir --parents $@ >/dev/null 2>&1 || true
-
-#
-# Configuration
-#
-
-# Create $(Metadata)/config.json
-# Input is user defined config.yaml or config.json.
-ifeq (config.yaml, $(wildcard config.yaml))
-
-# Convert config.yaml to $(Metadata)/config.json
-$(Metadata)/config.json: config.yaml \
-| $(Metadata)
-	$(info ==> $@)
-	@yaml2json < $< > $@
-
-else ifeq (config.json, $(wildcard config.json))
-
-# Convert config.json to $(Metadata)/config.json
-$(Metadata)/config.json: config.json \
-| $(Metadata)
-	$(info ==> $@)
-	@jqt -Pjson < $< > $@
-
-else
-$(error Configuration file not found)
-endif
-
-# Globals definition to mix with config.json
-define m_SITE_JSON :=
-  del(.defaults)					\
-  | . + { 						\
-  	Destination: (.Destination // "./_site"),	\
-  	Assets:      (.Assets      // "./assets"),	\
-  	Blocks:      (.Blocks      // "./blocks"),	\
-  	Content:     (.Content     // "./content"),	\
-  	Data:        (.Data        // "./data"),	\
-  	Layouts:     (.Layouts     // "./layouts"),	\
-  	Styles:      (.Styles      // "./styles"),	\
-  	Version:     (.Version     // "$(Version)")	\
-  }
-endef
-
-$(Metadata)/site.json: $(Metadata)/config.json
-	$(info ==> $@)
-	@jq --sort-keys '$(m_SITE_JSON)' < $< > $@
-
-# Variables to define in globals.make
-define m_MAKE_GLOBALS :=
-  "__globals__ := 1",				\
-  "Assets      := " + .Assets,			\
-  "Blocks      := " + .Blocks,			\
-  "Content     := " + .Content,			\
-  "Data        := " + .Data,			\
-  "Destination := " + .Destination,		\
-  "Layouts     := " + .Layouts,			\
-  "Styles      := " + .Styles,			\
-  "# vim:syntax=make"
-endef
-
-# Create globals.make
-$(Metadata)/globals.make: $(Metadata)/site.json
-	$(info ==> $@)
-	@jq --raw-output '$(m_MAKE_GLOBALS)' < $< > $@
-
-ifdef __globals__
-
-#md_page_id      = $(subst $(MetaDB)/pages/,,$(basename $1))
-#md_page_url     = $(call md_page_id,$1).html
-#md_page_name    = $(basename $(notdir $1))
-#md_page_path    = $(dir $(call md_page_id,$1))
-#md_page_section = $(patsubst %/,%,$(call md_page_path,$1))
-#md_page_base    = $(patsubst ../../%,%,$(subst $(space),,$(patsubst %,../,$(subst /, ,$1))))
-#
-## . is a MarkDown file front matter
-#define md_entry_page
-#  . + {                                         \
-#    "id":       "$(call md_page_id,$1)",        \
-#    "base":     "$(call md_page_base,$1)",      \
-#    "filename": "$(call md_page_name,$1)",      \
-#    "path":     "$(call md_page_path,$1)",      \
-#    "url":      "$(call md_page_url,$1)",       \
-#    "section":  "$(call md_page_section,$1)",   \
-#    "isnode":   false,                          \
-#    "ispage":   true                            \
-#  } as $$page |                                 \
-#  $$config[0].defaults as $$defaults |          \
-#  reduce $$defaults[] as $$d                    \
-#    ({}; if ("$(call md_page_id,$1)" | test("^" + $$d.idprefix)) \
-#         then . + $$d.properties                \
-#         else . end) + $$page
-#endef
-
-#$(Metadata)/pages/%.json: $(Content)/%.md $(Metadata)config.json | $$(dir $$@)		\
-#	$(info ==> $@)
-#        sed -n -e '1d;/^---$$/q;/^\.\.\.$$/q;/^\#/d;p' < $<	\
-#        | yaml2json                                             \
-#        | jq --sort-keys                                        \
-#             --slurpfile config $(MetaDB)/config.json           \
-#             '$(call md_entry_page,$@)' >$@
-#
-
-endif # __globals__
-
-# vim:ai:sw=8:ts=8:noet:fileencoding=utf8:syntax=make
diff --git a/docs/make.d/prelude.make b/docs/make.d/prelude.make
new file mode 100644
index 0000000..da7007f
--- /dev/null
+++ b/docs/make.d/prelude.make
@@ -0,0 +1,100 @@
+########################################################################
+# Prelude
+########################################################################
+
+# Exported macros:
+#	comma
+#	empty
+#	space
+#	rest
+#	filename
+
+#
+# Prerequisites
+#
+
+# We are using some of the newest GNU Make features... so require GNU
+# Make version >= 3.82
+version_test := $(filter 3.82,$(firstword $(sort $(MAKE_VERSION) 3.82)))
+ifndef version_test
+$(error GNU Make version $(MAKE_VERSION); version >= 3.82 is needed)
+endif
+
+# Only one target at the same time
+MAKECMDGOALS ?= all
+
+# Check 'root' intentions
+ifeq (,$(filter install uninstall,$(MAKECMDGOALS)))
+ifeq (0,$(shell id --user))
+$(error Root only can make "(un)install" targets)
+endif
+SUDO := 
+else
+SUDO := sudo
+endif
+
+# Target 'clobber' must be alone
+ifeq (clobber,$(filter clobber,$(MAKECMDGOALS)))
+ifneq (1,$(words $(MAKECMDGOALS)))
+$(error Target "clobber" must be alone)
+endif
+endif
+
+#
+# Make configuration
+#
+
+# Disable builtins.
+MAKEFLAGS += --no-builtin-rules
+MAKEFLAGS += --no-builtin-variables
+
+# Warn when an undefined variable is referenced.
+MAKEFLAGS += --warn-undefined-variables
+
+# Make will not print the recipe used to remake files.
+#.SILENT:
+
+# Eliminate use of the built-in implicit rules. Also clear out the
+# default list of suffixes for suffix rules.
+.SUFFIXES:
+
+# Sets the default goal to be used if no targets were specified on the
+# command line.
+.PHONY: all
+.DEFAULT_GOAL := all
+
+# Default shell: if we require GNU Make, why not require Bash?
+SHELL := /bin/bash
+
+# The argument(s) passed to the shell are taken from the variable
+# .SHELLFLAGS.
+.SHELLFLAGS := -o errexit -o pipefail -o nounset -c
+
+# Make will delete the target of a rule if it has changed and its recipe
+# exits with a nonzero exit status.
+.DELETE_ON_ERROR:
+
+# Enable a second expansion of the prerequisites
+.SECONDEXPANSION:
+
+#
+# Common macros
+#
+
+# Hacks for string manipulation
+comma := ,
+empty :=
+space := $(empty) $(empty)
+tab := $(empty)	$(empty)
+
+# Hack for list manipulation
+define rest =
+$(wordlist 2,2147483648,$1)
+endef
+
+# File name without extension nor directory
+define filename
+$(basename $(notdir $1))
+endef
+
+# vim:ai:sw=8:ts=8:noet:fileencoding=utf8:syntax=make
diff --git a/docs/make.d/vnu.make b/docs/make.d/vnu.make
index 3d85692..cc707ee 100644
--- a/docs/make.d/vnu.make
+++ b/docs/make.d/vnu.make
@@ -6,8 +6,6 @@
 # 	valid
 # 	lint
 
-ifdef __globals__
-
 .PHONY: valid lint
 
 VNU := /usr/local/vnu/vnu.jar
@@ -22,6 +20,4 @@ lint: all
 	@xmlwf $(Destination)/*.html
 	@java -jar $(VNU) --format text $(Destination)/*.html
 
-endif # __globals__
-
 # vim:ai:sw=8:ts=8:noet:fileencoding=utf8:syntax=make