diff --git a/doc/user/installation.rst b/doc/user/installation.rst
index ff5c3c2..fd4d6f7 100644
--- a/doc/user/installation.rst
+++ b/doc/user/installation.rst
@@ -21,6 +21,14 @@ always install from PyPi.
 If you use the ``--pre`` parameter for ``pip``, you will get the latest
 pre-release.
 
+The following installation options exist:
+
+ * `all`: install all packages available for this platform
+ * `usb`: install packages required for USB printers
+ * `serial`: install packages required for serial printers
+ * `win32`: install packages required for win32 printing (only Windows)
+ * `cups`: install packages required for CUPS printing
+
 Setup udev for USB-Printers
 ---------------------------
 1. Get the *Product ID* and *Vendor ID* from the lsusb command
diff --git a/tox.ini b/tox.ini
index 9106c37..c990d90 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,6 +22,7 @@ deps = jaconv
        pytest-mock
        hypothesis>4
        python-barcode
+extras = all
 commands = pytest
 passenv = ESCPOS_CAPABILITIES_PICKLE_DIR, ESCPOS_CAPABILITIES_FILE, CI, TRAVIS, TRAVIS_*, APPVEYOR, APPVEYOR_*, CODECOV_*
 setenv = PY_IGNORE_IMPORTMISMATCH=1