Minor adjustment

app.py

@@ -72,7 +72,7 @@ def generate_random_walk(iters, step_size = 1, random_seed = None):
 
 iters = gr.Number(value=1e5,label="How many random steps?")
 step_size = gr.Number(value=1,label="Step size")
-random_seed = gr.Number(value=None,label="Random seed")
+random_seed = gr.Number(value=42,label="Random seed (Delete it to go full random mode)")
     
 iface = gr.Interface(fn=generate_random_walk, inputs=[iters, step_size, random_seed], outputs="image", title="2-D Random Walk Plot", description="Steps along NEWS directions only")
 iface.launch()