diff --git a/en/sigmastar-research.md b/en/sigmastar-research.md
index 5c5626f..38fda61 100644
--- a/en/sigmastar-research.md
+++ b/en/sigmastar-research.md
@@ -27,18 +27,24 @@ echo 1 > /sys/class/pwm/pwmchip0/pwm4/enable
 ```
 
 #### 61 pin  red_led PM_GPIO2
+
+```
 ./devmem 0x1f001CA0 w 0x40
 
 echo 2 > /sys/class/pwm/pwmchip0/export
 echo 16000 > /sys/class/pwm/pwmchip0/pwm2/period
 echo 50 > /sys/class/pwm/pwmchip0/pwm2/duty_cycle
 echo 1 > /sys/class/pwm/pwmchip0/pwm2/enable
+```
 
 
 #### 63 pin  blue_led PM_GPIO3
+
+```
 ./devmem 0x1f001CA0 w 0x100
 
 echo 3 > /sys/class/pwm/pwmchip0/export
 echo 16000 > /sys/class/pwm/pwmchip0/pwm3/period
 echo 80 > /sys/class/pwm/pwmchip0/pwm3/duty_cycle
 echo 1 > /sys/class/pwm/pwmchip0/pwm3/enable
+```