diff --git a/graphs/graphs.ms b/graphs/graphs.ms
index c38ed5a..d2020c7 100644
--- a/graphs/graphs.ms
+++ b/graphs/graphs.ms
@@ -89,17 +89,32 @@ A lot of designs won't be mentioned here.
 The actual history of databases is often quite unclear since the categories of databases are sometimes vague, underspecified.
 As mentioned, SQL is not a silver bullet and a lot of developers shifted towards other solutions, that's the important part.
 .FOOTNOTE2
-.TBD
-The 
-Document-oriented databases are key-value stores.
-Furthermore, metadata is extracted for further optimization.
-
-Contrary to SQL, DODB has a very narrow scope: to provide a library enabling to store, retrieve, modify and delete data to the application.
-Thus, DODB doesn't provide an interactive shell, no request language to perform arbitrary operations on the database, etc.
+The NoSQL movement started because the stated goals of many actors from the early Web boom were different from SQL.
+The need for very fast operations far exceeded what was practical at the moment with SQL.
+This led to the use of more basic methods to manage data such as
+.I "key-value stores" ,
+which simply associate a value with an
+.I index
+for fast retrieval.
+In this case, there is no need for the database to have
+.I tables ,
+data may be untyped, the entries may even have different attributes.
+Since homogeneity is not necessary anymore, databases have fewer (or different) constraints.
+Document-oriented databases are a sub-class of key-value stores, where metadata can be extracted from the entries for further optimizations.
+And that's exactly what is being done in Document Oriented DataBase (DODB).
 
+Contrary to SQL, DODB has a very narrow scope: to provide a library enabling to store, retrieve, modify and delete data.
+In this way, DODB transforms any application in a database manager.
+DODB doesn't provide an interactive shell, there is no request language to perform arbitrary operations on the database, no statistical optimizations of the requests based on query frequencies, etc.
+Instead, DODB reduces the complexity of the infrastructure, stores data in plain files and enables simple manual scripting with widespread unix tools.
+Simplicity is key.
+.
 .SECTION Basic usage
+.
 .SECTION A few more options
+.
 .SECTION Limits of DODB
+.
 .SECTION Experimental scenario
 .LP
 The following experiment shows the performance of DODB based on quering durations.
diff --git a/graphs/macros.roff b/graphs/macros.roff
index 6341800..cb43d07 100644
--- a/graphs/macros.roff
+++ b/graphs/macros.roff
@@ -1,7 +1,7 @@
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 .nr PO 0.5i   \" page offset default 1i
 .nr LL 7.0i   \" line length default 6i
-.nr FM 0.8i   \" page foot margin default 1i
+.nr FM 0.3i   \" page foot margin default 1i
 .nr DI 0
 .nr FF 3   \" footnotes' type: numbered, with point, indented
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