diff --git a/concurrent_steps.py b/concurrent_steps.py
index 4725980..9faa4a9 100755
--- a/concurrent_steps.py
+++ b/concurrent_steps.py
@@ -36,6 +36,7 @@ def main():
     display = True
     gif = False
     savename = "{0:d}bodies_psi45_{1:s}".format(n_bodies, integrator)
+    display_param = True
 
     bodies, bodysyst = [],[]
     for j in range(n_bodies):
@@ -64,7 +65,7 @@ def main():
         ecc.append(ecc0)
         phi.append(phi0)
     parameters = [duration, step, dyn_syst, integrator]
-    display_parameters(E, L, sma, ecc, phi, parameters=parameters, savename=savename)
+    display_parameters(E, L, sma, ecc, phi, parameters=parameters, savename=savename, display_param=display_param)
     return 0
 
 if __name__ == '__main__':
diff --git a/lib/LeapFrog.py b/lib/LeapFrog.py
index 98b10ab..fb6570f 100644
--- a/lib/LeapFrog.py
+++ b/lib/LeapFrog.py
@@ -70,9 +70,9 @@ def leapfrog(dyn_syst, bin_syst, duration, dt, recover_param=False, display=Fals
                 step = None
             # display progression
             if len(dyn_syst.bodylist) == 1:
-                d.on_running(dyn_syst, step=step, label="{0:.2f} years".format(j*dt/yr))
+                d.on_running(step=step, label="{0:.2f} years".format(j*dt/yr))
             else:
-                d.on_running(dyn_syst, step=step, label="{0:.2f} years".format(j*dt/yr))
+                d.on_running(step=step, label="{0:.2f} years".format(j*dt/yr))
     if display:
         d.close()
         if gif:
diff --git a/lib/hermite.py b/lib/hermite.py
index 41abc85..73ce822 100644
--- a/lib/hermite.py
+++ b/lib/hermite.py
@@ -116,9 +116,9 @@ def hermite(dyn_syst, bin_syst, duration, dt, recover_param=False, display=False
                 step = None
             # display progression
             if len(dyn_syst.bodylist) == 1:
-                d.on_running(dyn_syst, step=step, label="{0:.2f} years".format(j*dt/yr))
+                d.on_running(step=step, label="{0:.2f} years".format(j*dt/yr))
             else:
-                d.on_running(dyn_syst, step=step, label="{0:.2f} years".format(j*dt/yr))
+                d.on_running(step=step, label="{0:.2f} years".format(j*dt/yr))
     if display:
         d.close()
         if gif:
diff --git a/lib/plots.py b/lib/plots.py
index 2833b7a..75fdb44 100755
--- a/lib/plots.py
+++ b/lib/plots.py
@@ -10,6 +10,33 @@ from lib.units import *
 
 
 class DynamicUpdate():
+    """
+    Class for dynamic display of the integrated system.
+    Initialise with the System of Bodies that will be integrated.
+    Launch the display, then call on_running method the update it.
+    -----
+    dyn_syst = System(bodylist)
+    d = DynamicUpdate(dyn_syst)
+    [Start integration procedure]
+    #Init
+    d.launch()
+    [in intgration loop]
+    #integration
+    for step in range(duration):
+        #update attributes of dyn_syst
+        d.on_running(step=step, label="will be displayed on current update")
+    [when integration reach end]
+    d.close()
+    -----
+    Additionnal parameters:
+    launch(blackstyle): boolean
+        If the display should have black background.
+        Default to True.
+    launch(lim_factor): float
+        Limits of the 3D display are dynamically updated to max_value*lim_factor.
+        Should always be >1. to have all bodies in the display.
+        Default to 1.5
+    """
     #Suppose we know the x range
     min_x = -1
     max_x = 1
@@ -41,7 +68,7 @@ class DynamicUpdate():
         self.ax.w_yaxis.set_pane_color((0,0,0,0))
         self.ax.w_zaxis.set_pane_color((0,0,0,0))
 
-    def launch(self, blackstyle=True):
+    def launch(self, blackstyle=True, lim_factor=1.5):
         #Set up plot
         if blackstyle:
             self.blackstyle = True
@@ -50,6 +77,7 @@ class DynamicUpdate():
             self.blackstyle = False
             self.fig = plt.figure(figsize=(10,10))
             self.ax = self.fig.add_subplot(projection='3d')
+        self.lim_factor = 1.5
 
         self.lines = []
         for i,body in enumerate(self.dyn_syst.bodylist):
@@ -59,7 +87,7 @@ class DynamicUpdate():
         self.lines = np.array(self.lines)
         #Autoscale on unknown axis and known lims on the other
         self.ax.set_autoscaley_on(True)
-        self.set_lims()
+        self.set_lims(factor=self.lim_factor)
         #Other stuff
         self.ax.grid()
         if self.blackstyle:
@@ -73,13 +101,13 @@ class DynamicUpdate():
             self.ax.set_ylabel('AU')
             self.ax.set_zlabel('AU')
 
-    def on_running(self, dyn_syst, step=None, label=None):
-        xdata, ydata, zdata = dyn_syst.get_positionsCOM()
+    def on_running(self, step=None, label=None):
+        xdata, ydata, zdata = self.dyn_syst.get_positionsCOM()
         values = np.sqrt(np.sum((np.array((xdata,ydata,zdata))**2).T,axis=1))/au
         self.min_x, self.max_x = -np.max([np.abs(values).max(),self.max_x]), np.max([np.abs(values).max(),self.max_x])
-        self.set_lims()
+        self.set_lims(factor=self.lim_factor)
         #Update data (with the new _and_ the old points)
-        for i,body in enumerate(dyn_syst.bodylist):
+        for i,body in enumerate(self.dyn_syst.bodylist):
             x, y, z = body.q/au
             self.lines[i].set_data_3d([x], [y], [z])
         if not label is None:
@@ -101,8 +129,22 @@ class DynamicUpdate():
         plt.close()
 
 
-def display_parameters(E,L,sma,ecc,phi,parameters,savename=""):
+def display_parameters(E,L,sma,ecc,phi,parameters,savename="",display_param=True):
     """
+    Save integrated parameters plots to multiple png files.
+    -----
+    Inputs:
+    E, L, sma, ecc, phi : list of np.ndarray
+        list of integrated parameters value computed for each step length in
+        parameters[step] list.
+    parameters : list
+        list of simulation parameters : duration, steps, system, integrator.
+    savename : str
+        default savename that will be prepend to each saved file path.
+        Default to empty string.
+    display_param : boolean
+        Set to True if the user wants to display the plots before saving,
+        False otherwise. Default to True.
     """
     if savename != "":
         savename += "_"
@@ -169,5 +211,6 @@ def display_parameters(E,L,sma,ecc,phi,parameters,savename=""):
     fig6.suptitle("Inclination angle of the perturbator's orbital plane "+title2)
     fig6.savefig("plots/{0:s}phi.png".format(savename),bbox_inches="tight")
     
-    plt.show(block=True)
+    if display_param:
+        plt.show(block=True)
   
\ No newline at end of file
diff --git a/main.py b/main.py
index ff0c3d9..92d380c 100755
--- a/main.py
+++ b/main.py
@@ -33,6 +33,7 @@ def main():
     display = False
     gif = False
     savename = "{0:d}bodies_{1:s}".format(n_bodies, integrator)
+    display_param = True
 
     #simulation start
     bodylist = []
@@ -47,8 +48,7 @@ def main():
         E, L, sma, ecc, phi = hermite(dyn_syst, bin_syst, duration, step, recover_param=True, display=display, savename=savename, gif=gif)
 
     parameters = [duration, [step], dyn_syst, integrator]
-    display_parameters([E], [L], [sma], [ecc], [phi], parameters=parameters, savename=savename) #take the mean value of sma/ecc on given time interval (up to one period)
-    # np.convolve(sma, np.ones(int(period/step)))/int(period/step) -> moving average on the period duration
+    display_parameters([E], [L], [sma], [ecc], [phi], parameters=parameters, savename=savename, display_param=display_param)
     return 0
 
 if __name__ == '__main__':