diff --git a/README.md b/README.md
index d8a0053..c69e246 100644
--- a/README.md
+++ b/README.md
@@ -56,10 +56,10 @@ Motorized automatic solder paste dispenser. Easily printable on a 3D printer at
 + PUSH button short switch ON -> Return from retract(retract duration time) -> Pulse for extrusion(pulse time) -> Retract(retract duration time)
 
 **Manual Extrusion** 
-+ PUSH button long switch ON(more as Retract duration time + Pulse time) -> extrusion until the PUSH button is switch OFF
++ PUSH button long switch ON(more as Retract duration time + Pulse time) -> extrusion until the PUSH button is switch OFF. This mode is used to insert a filled Syringe.
 
 **Manual Retract**
-+ PULL button switch ON -> retraction until the PULL button is switch OFF 
++ PULL button switch ON -> retraction until the PULL button is switch OFF. This mode is using for remove and fill Syringe.
 +
 + All params are immeidiately saved to emulated EPROM(FLASH CPU) after select
 + Speed: 5, 10, 15 ...... 100% step by 5%