diff --git a/introduction/intro.rst b/introduction/intro.rst
index 7f90865d..1e5d9260 100644
--- a/introduction/intro.rst
+++ b/introduction/intro.rst
@@ -9,7 +9,7 @@ Qubes OS is a free and open-source, security-oriented operating system for
 single-user desktop computing. Qubes OS `leverages Xen-based virtualization <https://wiki.xen.org/wiki/Xen_Project_Software_Overview>`__ to allow for the creation and management of isolated compartments called :ref:`qubes <user/reference/glossary:qube>`.
 
 These qubes, which are implemented as :ref:`virtual machines (VMs)<user/reference/glossary:vm>`, have specific:
-               
+
 - **Purposes:** with a predefined set of one or many isolated
   applications, for personal or professional projects, to manage the
   :doc:`network stack </developer/system/networking>`, :doc:`the firewall </user/security-in-qubes/firewall>`, or to fulfill other
@@ -19,7 +19,7 @@ These qubes, which are implemented as :ref:`virtual machines (VMs)<user/referenc
   :doc:`stripped-down </introduction/getting-started/>` virtual machines based on popular operating systems,
   such as :doc:`Fedora </user/templates/fedora/fedora>`, :doc:`Debian </user/templates/debian/debian>`, and
   `Windows <https://github.com/Qubes-Community/Contents/blob/master/docs/os/windows/windows.md>`__.
-               
+
 - **Levels of trust:** from complete to non-existent. All windows are displayed in a unified desktop environment with
   :doc:`unforgeable colored window borders </introduction/getting-started>` so that different security levels are easily identifiable.
 
@@ -43,7 +43,7 @@ Features
 - **Multiple operating systems** Use multiple operating systems at the same time, including
   :doc:`Fedora </user/templates/fedora/fedora>`, :doc:`Debian </user/templates/debian/debian/>`, and
   `Windows <https://github.com/Qubes-Community/Contents/blob/master/docs/os/windows/windows.md>`__
-         
+
 - **Disposables** Create :doc:`disposables </user/how-to-guides/how-to-use-disposables>` on the fly that self-destruct when shut down.
 
 - **Whonix integration** Run `Tor <https://www.torproject.org/>`__ securely system-wide using `Whonix with Qubes <https://www.whonix.org/wiki/Qubes>`__.
@@ -127,7 +127,7 @@ plug in devices, and install software free from worry. It's a place where
 **you** have control over your software, not the other way around.
 (See some :doc:`examples of how different types of users organize their qubes </user/how-to-guides/how-to-organize-your-qubes>`.)
 
-Qubes is also powerful. Organizations like the `Freedom of the Press Foundation <https://securedrop.org/news/piloting-securedrop-workstation-qubes-os>`__, 
+Qubes is also powerful. Organizations like the `Freedom of the Press Foundation <https://securedrop.org/news/piloting-securedrop-workstation-qubes-os>`__,
 `Mullvad <https://twitter.com/mullvadnet/status/631010362083643392>`__,
 and `Let's Encrypt <https://twitter.com/letsencrypt/status/1239934557710737410>`__
 rely on Qubes as they build and maintain critical privacy and
@@ -150,7 +150,7 @@ Qubes OS at a glance
 
 - :doc:`Video tours</introduction/video-tours/>`: want to see Qubes OS in action? Sit back and watch one of the guided tour!
 - :doc:`Screenshots </introduction/screenshots/>`: see what using Qubes actually looks like with various applications running in Qubes.
-- :doc:`Getting started </introduction/getting-started>`: ready to get started with Qubes? Find all you need to know after installing. 
+- :doc:`Getting started </introduction/getting-started>`: ready to get started with Qubes? Find all you need to know after installing.
 
 More information
 ----------------
diff --git a/user/how-to-guides/how-to-use-devices.rst b/user/how-to-guides/how-to-use-devices.rst
index e93225c6..f865b4cf 100644
--- a/user/how-to-guides/how-to-use-devices.rst
+++ b/user/how-to-guides/how-to-use-devices.rst
@@ -27,7 +27,7 @@ General Qubes Device Widget Behavior And Handling
    :alt:
    :align: center
 
-   Qubes Devices Widget tray icon 
+   Qubes Devices Widget tray icon
 
 When clicking on the tray icon, several device-classes separated by lines are displayed as tooltip. Block devices are displayed on top, microphones one below and USB-devices at the bottom.
 
@@ -58,7 +58,7 @@ Device Classes
 
 .. program:: qvm-device
 
-``qvm-device`` expects :option:`DEVICE_CLASS` as first argument. 
+``qvm-device`` expects :option:`DEVICE_CLASS` as first argument.
 
 .. option:: DEVICE_CLASS
 
@@ -130,7 +130,7 @@ The :option:`list` action lists known devices in the system. :option:`list` acce
    equivalent to specifying every VM name after :option:`qvm-device list`. No VM-name implies :option:`--all`.
 
 .. option::  --exclude
-   
+
    exclude VMs from :option:`--all`. Requires :option:`--all`.
 
 **SYNOPSIS**::
@@ -152,7 +152,7 @@ The :option:`qvm-device attach` action assigns an exposed device to a VM. This m
 
 :option:`qvm-device attach` accepts two options:
 
-.. option:: --persistent 
+.. option:: --persistent
 
    attach device on :option:`targetVM`-boot. If the device is unavailable (physically missing or ``sourceVM`` not started), booting the :option:`targetVM` fails.