diff --git a/README.md b/README.md
index abdafd0..73e166f 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,17 @@
 # Simgrid platform to dot file converter
 
-**sgp2dot** is a [Simgrid](https://simgrid.org) platform to [Graphiz dot file](http://graphviz.org/) convert implemented in Lisp. It requires:
-- Common Lisp (Implementation supporting asdf)
-- s-xml
+**sgp2dot** is a [Simgrid](https://simgrid.org) platform to [Graphiz dot file](http://graphviz.org/) converter implemented in Common Lisp. It requires:
+- Common Lisp
+- [ASDF](https://common-lisp.net/project/asdf/) (Another System Definition Facility)
+- [S-XML](https://common-lisp.net/project/s-xml/) (Simple XML parser)
 
-How to use it ? Compile it using the following lisp code:
+### How to use it ?
 
+- **First solution:** Compile the project using *asdf* with the following call:
     > (asdf:operate :build-op "sgp2dot")
     
-Finally invoke `(convert <platform-file> <output-dot-file>)` or use the dedicated *sgp2dot-cl.lisp*
-in your CLI. Note that you should change the *sgp2dot-cl.lisp* shebang according to your lisp implementation.
+	Then, use the dedicated *sgp2dot-cl.lisp* in your CLI. Note that you should 
+	adapt the *sgp2dot-cl.lisp* shebang  according to your lisp implementation.
 
+- **Second, and simpler solution:** Load the system using *asdf*, and invoke
+	`(sgp2dot:convert <platform-file> <output-dot-file>)`.