diff --git a/main.py b/main.py
index 0b6b778..6ead67d 100644
--- a/main.py
+++ b/main.py
@@ -5,8 +5,8 @@ pygame.init()
 ## funktionen
 def get_debug_text():
     def text(text,line_counter):
-        debug_text = default_font.render(str(text), True, (255,255,255))
-        screen.blit(debug_text,(0,line_counter*default_font.get_height()))
+        debug_text = debug_font.render(str(text), True, (255,255,255))
+        screen.blit(debug_text,(0,line_counter*debug_font.get_height()))
 
     line_counter = 1
     globalvars = globals()
@@ -26,13 +26,15 @@ screen = pygame.display.set_mode((300,300),pygame.RESIZABLE)
 pygame.display.set_caption("Lissajous Figures")
 screensize = pygame.display.get_window_size()
 clock = pygame.time.Clock()
-default_font = pygame.font.SysFont("sans", 14)
+debug_font = pygame.font.SysFont("sans", 14)
+default_font = pygame.font.SysFont(pygame.font.get_default_font(), 25)
 
 mitte_pos = screensize[0]//2,screensize[1]//2
 frequ1 = 1
 frequ2 = 1
 
 phasenverschiebung = 90
+phasenverschiebungspeed = 1
 
 scale = (get_best_size()-10)//2
 
@@ -50,12 +52,16 @@ if __name__ == "__main__":
            show_debug = not show_debug
         if pressed_keys[pygame.K_UP] and not preview_pressed_keys[pygame.K_UP]:
             frequ1 += 1
-        if pressed_keys[pygame.K_DOWN] and not preview_pressed_keys[pygame.K_DOWN] and frequ1>=0:
+        if pressed_keys[pygame.K_DOWN] and not preview_pressed_keys[pygame.K_DOWN] and frequ1 >=1:
             frequ1 -= 1
         if pressed_keys[pygame.K_RIGHT] and not preview_pressed_keys[pygame.K_RIGHT]:
             frequ2 += 1
-        if pressed_keys[pygame.K_LEFT] and not preview_pressed_keys[pygame.K_LEFT] and frequ2>=0:
+        if pressed_keys[pygame.K_LEFT] and not preview_pressed_keys[pygame.K_LEFT] and frequ2>=1:
             frequ2 -= 1
+        if pressed_keys[pygame.K_PLUS] and not preview_pressed_keys[pygame.K_PLUS]:
+            phasenverschiebungspeed += 0.05
+        if pressed_keys[pygame.K_MINUS] and not preview_pressed_keys[pygame.K_MINUS] and phasenverschiebungspeed>=0:
+            phasenverschiebungspeed -= 0.05
 
         preview_pressed_keys = pressed_keys
         ## event managment
@@ -69,19 +75,16 @@ if __name__ == "__main__":
 
         if show_debug:
             get_debug_text()
-        phasenverschiebung += 0.1
+        phasenverschiebung += phasenverschiebungspeed
         if phasenverschiebung >= 360:
             phasenverschiebung = 0
         for r in range(360):
             pos = (sin(radians(frequ1*(r+phasenverschiebung)))*scale)+mitte_pos[0],(cos(radians(frequ2*r))*scale)+mitte_pos[1]
             pygame.draw.line(screen,(0,255,0),preview_pos,pos,3)
             preview_pos = pos
-            #pygame.draw.circle(screen,(255,0,0),pos,2)
-        #frequ1 = pygame.mouse.get_pos()[0]//5
-        #frequ2 = pygame.mouse.get_pos()[1]//5
 
 
-        frequs_txt = default_font.render(f"x = {frequ1}, y = {frequ2}", True, (255,255,255))
+        frequs_txt = default_font.render(f"Speed = {phasenverschiebungspeed}    X = {frequ1}   Y = {frequ2}", True, (255,255,255))
         screen.blit(frequs_txt,(0,0))
         ## bildschirm aktuallisierung
         pygame.display.flip()