Document the functions

proarbeit.py

@@ -5,7 +5,8 @@ from time import sleep
 
 def erratic_movement(screen_width, screen_height):
     """
-    Moves the cursor to a random position with the screen's width and height as an upper bound
+    Moves the cursor to a random position with the screen's
+    width and height as an upper bound
     """
     move(
         randbelow(screen_width), randbelow(screen_height),
@@ -14,7 +15,8 @@ def erratic_movement(screen_width, screen_height):
 
 def main():
     """
-    Calls the movement function in an infinite loop, with a random delay between each call
+    Calls the movement function in an infinite loop,
+    with a random delay between each call
     """
     screen_width = 800
     screen_height = 600