diff --git a/core/cmdline/input.go b/core/cmdline/input.go
index 0284d99e..b25a233a 100644
--- a/core/cmdline/input.go
+++ b/core/cmdline/input.go
@@ -7,11 +7,13 @@ import (
 	"strings"
 )
 
+// EnterToContinue let stdin waiting for an enter key to continue.
 func EnterToContinue() {
 	fmt.Print("Press 'Enter' to continue...")
 	bufio.NewReader(os.Stdin).ReadBytes('\n')
 }
 
+// ReadLine shows prompt to stdout and read a line from stdin.
 func ReadLine(prompt string) string {
 	fmt.Print(prompt)
 	input, _ := bufio.NewReader(os.Stdin).ReadString('\n')