diff --git a/How-to-run.md b/How-to-run.md
index 024edd5..884fd5f 100644
--- a/How-to-run.md
+++ b/How-to-run.md
@@ -16,6 +16,6 @@ Run simulations in parallel with multiple configuration files :
 
 ![](https://github.com/Ahp06/SUMO_Emissions/blob/master/sumo_project/files/imgs/runner_run_ex.PNG)
 
-This command will run a simulation dump "dump" with the configuration file(s) "config1" and "config2" 
-with CSV data export and logs backup.
+This command will run a simulation dump "dump" with the configuration file(s) "config1" and "config2" in parallel
+with CSV data export and logs backup. The number of simulations you can run in parallel obviously depends on the hardware characteristics of your machine.