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+Administrating EMBOSS on Gentoo systems
+=======================================
+
+
+Codon data files location
+-------------------------
+
+The codon data files that are distributed with EMBOSS are installed in the
+``EPREFIX/usr/share/EMBOSS/data/CODONS.orig`` directory instead of the usual
+``EPREFIX/usr/share/EMBOSS/data/CODONS``. This is done to avoid confusion between
+these codon files and those installed with the CUTG database. The names of
+these files sometimes vary only by their case. Having both sets of files in
+the same directory is also impossible on systems such as MacOSX, where the
+root filesystem is case insensitive. If you do not have the CUTG database
+installed and want to use the codon files distributed with EMBOSS, you can
+symlink the ``CODONS.orig`` directory to ``CODONS``::
+
+	# cd ${EPREFIX}/usr/share/EMBOSS/data
+	# ln -s CODONS.orig CODONS
+
+
+Restriction enzymes equivalence file location
+---------------------------------------------
+
+The restriction enzymes equivalence file distributed with EMBOSS is installed
+as ``EPREFIX/usr/share/EMBOSS/data/embossre.equ.orig`` rather than the usual
+``EPREFIX/usr/share/EMBOSS/data/embossre.equ``. This is done to avoid a file
+collision with the equivalence file provided by the Rebase database. If you do
+not have the Rebase database installed and want to use the equivalence file
+distributed with EMBOSS, you can symlink the ``embossre.equ.orig`` file to
+``embossre.equ``::
+
+	# cd ${EPREFIX}/usr/share/EMBOSS/data
+	# ln -s embossre.equ.orig embossre.equ