dot diagram for docs

3 files changed, 23 insertions, 3 deletions

diff --git a/doc/Makefile.am b/doc/Makefile.am
index 10da2d7d..6d822548 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,2 +1,5 @@
 info_TEXINFOS = manual.texi
 manual_TEXINFOS = version.texi
+
+# FIXME. Find a way to compile arch.dot here.
+# The command is: dot -Tpng arch.dot > arch.png
diff --git a/doc/arch.dot b/doc/arch.dot
new file mode 100644
index 00000000..a818ddce
--- /dev/null
+++ b/doc/arch.dot
@@ -0,0 +1,18 @@
+digraph G {
+
+  user[label="User browser"];
+  subgraph cluster_0 {
+    Frontend;
+    Backend;
+    DBMS;
+    label="Shop";
+  }
+  subgraph cluster_1 {
+    Exchange;
+    label="Exchange";
+  }
+  user->Frontend;
+  Frontend->Backend;
+  Backend->DBMS;
+  Backend->Exchange;
+}
diff --git a/doc/manual.texi b/doc/manual.texi
index 1b2e4a31..99b348ff 100644
--- a/doc/manual.texi
+++ b/doc/manual.texi
@@ -85,11 +85,10 @@ result, the frontend never has to directly communicate with the
 exchange, and also does not deal with sensitive data (such as the
 merchant's signing keys and bank account information).
 
-@c FIXME: this needs an image!
-@c show browser, Web server (frontend), Taler backend, DBMS and Taler exchange,
+@center @image{arch, 3in, 4in}
 
 
-@c re-FIXME: image like screenshots or diagrams?
+@c FIXME: How?
 @c and possibly even back office (Web service for shop owner)
 @c and interactions (select products, pay, deposit, confirm, persist, track)