diff --git a/README.md b/README.md
index ed2b86e2..f1d61991 100644
--- a/README.md
+++ b/README.md
@@ -800,10 +800,20 @@ sim_files="
 "
 ```
 
-**Traces have to be explicitly added to the traces list**. A new simulation
-is defined by a combination of two elements, one from the simulation files
-list and the other from the traces list. Thus the number of simulations
-executed is the number of simulation files multiplied by the number of traces.
+Set the variable **use_trace_list** to **yes** in order to use all traces
+from the trace list for all simulation files. Each pair generates a new
+simulation. Otherwise it runs a simulation per simulation file. The trace
+specified inside the simulation file is used.
+
+``` bash
+use_trace_list="yes"
+```
+
+When you choose **yes** then **traces have to be explicitly added to the traces
+list**. A new simulation is defined by a combination of two elements, one from
+the simulation files list and the other from the traces list. Thus the number
+of simulations executed is the number of simulation files multiplied by the
+number of traces.
 
 ```bash
 traces="
@@ -812,7 +822,8 @@ mediabench-unepic_32.stl
 "
 ```
 
-The script runs one instance of DRAMSys for each of the files in the list. **The multiple instances run in parallel**.
+The script runs one instance of DRAMSys for each of the files in the list.
+**The multiple instances run in parallel**.
 
 For more information check the documentation in [DRAMSylva folder](DRAMSys/library/resources/scripts/DRAMSylva).