fm.md

@@ -4,4 +4,11 @@ Feature Model (fm) files define a collection of features that are used to descri
 
 Each line of a Feature Model file defines a feature. Two kind of features can be defined, *simple features* and *complex features*.
 
-A simple feature must be selected in the list of [available features] (features)
\ No newline at end of file
+A simple feature must be selected in the list of [available features] (features).
+
+A complex feature is made of several simple features displayed on a single line.
+
+Here is an example of a simple fm file
+
+<tt>b0f</tt>
+<tt>s0p b1p</tt>
\ No newline at end of file