spec: Add introductory blurb about freedoms and choices

Signed-off-by: Michael Brown <mbrown@fensystems.co.uk>

spec/cx.lyx

@@ -630,8 +630,8 @@ subscription zone
 \end_layout
 
 \begin_layout Standard
-Everyone subscribes to receive notifications from the subscription zone
- of their own country.
+Everyone subscribes by default to receive notifications from the subscription
+ zone of their own country.
 \end_layout
 
 \begin_layout Standard
@@ -662,6 +662,38 @@ For healthcare providers in very large geographic areas, this same hierarchical
  levels.
 \end_layout
 
+\begin_layout Standard
+\noindent
+\align center
+\begin_inset Graphics
+	filename cooperation.svg
+	width 80text%
+
+\end_inset
+
+
+\end_layout
+
+\begin_layout Standard
+Any healthcare provider or app developer can deploy this technology.
+ There are no licensing fees, patents, or other intellectual property barriers.
+\end_layout
+
+\begin_layout Standard
+Any app will work with any healthcare provider.
+ There is no need for each healthcare provider to create a dedicated app,
+ although many healthcare providers may choose to do so.
+ Users can choose the app that best fits their individual needs: for example,
+ a niche app could be developed with a user interface designed for a particular
+ visual impairment.
+\end_layout
+
+\begin_layout Standard
+Healthcare providers can work independently or can choose to share notifications
+ with selected other healthcare providers in order to maximise the worldwide
+ effectiveness of contact tracing.
+\end_layout
+
 \begin_layout Standard
 \begin_inset Newpage pagebreak
 \end_inset