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diff --git a/README.md b/README.md
index 8631ccd..eb1de9b 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,40 @@ subtitle: 'An openrc service dedicated to Thinkpads X200'
 
 Overview
 ========
+x200-my is a simple openrc script primarily designed to make the
+distinctive whining noise of Thinkpads X200 disappear.  But it can
+also be used on other laptops.
 
+It is written to be used on [Hyperbola
+GNU/Linux-libre](https://www.hyperbola.info) but it should work on
+other Arch-based + openrc distributions.
+
+Privacy Settings
+----------------
+It also provides a “Privacy settings” section: if `enable_privacy` is
+set to `true`, then the wired internet interface that may or may not
+be connected to the internet can have its MAC address spoofed at
+startup. (The wireless interfaces must also be spoofed, but this can
+be handled by wpa_supplicant.)  Additionally, x200-my will delete
+`/etc/dhcpcd.duid`, which will make `dhcpcd` generate a new DUID-LLT
+based file with an updated timestamp and the link-layer address of the
+network interface that is connected to the DHCP device at the time
+that the DUID is generated.
+
+Backup
+------
+Finally x200-my has the ability to backup essential files or
+directories—for instance a backup disk mounted inside the dock.  Of
+course, the backup process is triggered on certain conditions
+only:
+1. The option must be enabled in the `/etc/conf.d/x200-my` file
+2. The disk must be mounted
+3. An (empty) `dobackup` file must be present in the backup directory.
+
+Then, once these conditions are met, the backup process is triggered
+whenever the service is stopped.  It additionally generates a list of
+installed packages in case the disk should die and everything should
+be reinstalled.
 
 License and Disclamer
 =====================
@@ -31,3 +64,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 
 Installation
 ============
+1. Clone this repository locally
+2. Do `makepkg`
+3. Install the generated x200-my as root with `pacman -U`
+4. Edit `/etc/conf.d/x200-my`