diff --git a/docs/dev/makefile.rst b/docs/dev/makefile.rst
index 699729a2..c4385561 100644
--- a/docs/dev/makefile.rst
+++ b/docs/dev/makefile.rst
@@ -150,6 +150,35 @@ Documentation <contrib docs>` section.  If you want to edit the documentation
 read our :ref:`make docs-live` section.  If you are working in your own brand,
 adjust your :ref:`Makefile setup <makefile setup>`.
 
+.. _make books:
+
+``make books/{name}.html books/{name}.pdf``
+===========================================
+
+.. _intersphinx: https://www.sphinx-doc.org/en/stable/ext/intersphinx.html
+.. _XeTeX: https://tug.org/xetex/
+
+.. sidebar:: info
+
+   To build PDF a XeTeX_ is needed, see :ref:`buildhosts`.
+
+
+The ``books/{name}.*`` targets are building *books*.  A *book* is a
+sub-directory containing a ``conf.py`` file.  One example is the user handbook
+which can deployed separately (:origin:`docs/user/conf.py`).  Such ``conf.py``
+do inherit from :origin:`docs/conf.py` and overwrite values to fit *book's*
+needs.
+
+With the help of Intersphinx_ (:ref:`reST smart ref`) the links to searx’s
+documentation outside of the book will be bound by the object inventory of
+``DOCS_URL``.  Take into account that URLs will be picked from the inventary at
+documentation's build time.
+
+Use ``make docs-help`` to see which books available:
+
+.. program-output:: bash -c "cd ..; make --no-print-directory docs-help"
+   :ellipsis: 0,-6
+
 
 .. _make gh-pages:
 
diff --git a/docs/dev/reST.rst b/docs/dev/reST.rst
index 96337874..8adf4115 100644
--- a/docs/dev/reST.rst
+++ b/docs/dev/reST.rst
@@ -319,6 +319,9 @@ To list all anchors of the inventory (e.g. ``python``) use:
 .. code:: sh
 
    $ python -m sphinx.ext.intersphinx https://docs.python.org/3/objects.inv
+   ...
+   $ python -m sphinx.ext.intersphinx https://searx.github.io/searx/objects.inv
+   ...
 
 Literal blocks
 ==============
diff --git a/docs/user/conf.py b/docs/user/conf.py
index 53ade4b6..da2e2753 100644
--- a/docs/user/conf.py
+++ b/docs/user/conf.py
@@ -4,6 +4,8 @@
 project   = 'Searx User-HB'
 version   = release = VERSION_STRING
 
+intersphinx_mapping['searx'] = (DOCS_URL, None)
+
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
diff --git a/docs/user/own-instance.rst b/docs/user/own-instance.rst
index af415b61..bb4c5d52 100644
--- a/docs/user/own-instance.rst
+++ b/docs/user/own-instance.rst
@@ -56,9 +56,9 @@ results.
 I see. What about private instances?
 ------------------------------------
 
-If users run their own instances, everything is in their control: the source
-code, logging settings and private data.  Unknown instance administrators do not
-have to be trusted.
+If users run their :ref:`own instances <installation>`, everything is in their
+control: the source code, logging settings and private data.  Unknown instance
+administrators do not have to be trusted.
 
 Furthermore, as the default settings of their instance is editable, there is no
 need to use cookies to tailor searx to their needs.  So preferences will not be
diff --git a/utils/makefile.sphinx b/utils/makefile.sphinx
index b4f298d5..e7368646 100644
--- a/utils/makefile.sphinx
+++ b/utils/makefile.sphinx
@@ -27,7 +27,7 @@ docs-help:
 	@echo  '  docs-clean	- clean intermediate doc objects'
 	@echo  '  $(GH_PAGES)	- create & upload github pages'
 	@echo  '  sphinx-pdf    - run sphinx latex & pdf targets'
-	echo   ''
+	@echo  ''
 	@echo  '  books/{name}.html : build only the HTML of document {name}'
 	@echo  '  valid values for books/{name}.html are:'
 	@echo  '    $(BOOKS_HTML)' | $(FMT)
@@ -99,7 +99,7 @@ sphinx-pdf: sphinx-latex
 	@echo "SPHINX    *.pdf --> file://$(abspath $(DOCS_DIST)/pdf)"
 
 PHONY += sphinx-latex
-sphinx-latex: texlive sphinx-doc
+sphinx-latex: pyenvinstall texlive
 	$(SPHINXBUILD) $(SPHINX_VERBOSE) $(SPHINXOPTS)\
 	  -b latex \
 	  -c $(DOCS_FOLDER) \
@@ -124,7 +124,7 @@ $(BOOKS_DIST):
 	mkdir -p $(BOOKS_DIST)
 
 PHONY += $(BOOKS_HTML)
-$(BOOKS_HTML): sphinx-doc | $(BOOKS_DIST)
+$(BOOKS_HTML): pyenvinstall | $(BOOKS_DIST)
 	SPHINX_CONF=$(patsubst books/%.html,%,$@)/conf.py \
 	$(SPHINXBUILD) $(SPHINX_VERBOSE) $(SPHINXOPTS)\
 	  -b html \
@@ -135,7 +135,7 @@ $(BOOKS_HTML): sphinx-doc | $(BOOKS_DIST)
 	@echo "SPHINX    $@ --> file://$(abspath $(BOOKS_DIST)/$(patsubst books/%.html,%,$@))"
 
 PHONY += $(BOOKS_HTML)
-$(BOOKS_LIVE): sphinx-live | $(BOOKS_DIST)
+$(BOOKS_LIVE): pyenvinstall | $(BOOKS_DIST)
 	PATH="$(PY_ENV_BIN):$(PATH)" \
 	SPHINX_CONF=$(patsubst books/%.live,%,$@)/conf.py \
 	$(PY_ENV_BIN)/sphinx-autobuild --poll -B --host 0.0.0.0 --port 8080 $(SPHINX_VERBOSE) $(SPHINXOPTS)\
@@ -152,7 +152,7 @@ $(BOOKS_PDF): %.pdf : %.latex
 	@echo "SPHINX    $@ --> file://$(abspath $(BOOKS_DIST)/$(patsubst books/%.pdf,%,$@))/pdf"
 
 PHONY += $(BOOKS_LATEX)
-$(BOOKS_LATEX): sphinx-doc | $(BOOKS_DIST)
+$(BOOKS_LATEX): pyenvinstall | $(BOOKS_DIST)
 	SPHINX_CONF=$(patsubst books/%.latex,%,$@)/conf.py \
 	$(SPHINXBUILD) $(SPHINX_VERBOSE) $(SPHINXOPTS)\
 	  -b latex \