password: fix sequencer documentation

password/sequencer.go

@@ -22,7 +22,7 @@ type Sequencer interface {
 	First() string
 	// Get returns the current password in the sequence.
 	Get() string
-	// GetN returns the password at location N, given 0 <= N < MaxPossibleWords
+	// GetN returns the value for N (location in list of possible passwords).
 	GetN() *big.Int
 	// GotoN overrides N.
 	GotoN(n *big.Int) (string, error)
@@ -110,15 +110,15 @@ func (s *sequencer) Get() string {
 	return s.get()
 }
 
-// GetN returns the password at location N, given 0 <= N <= MaxPossibleWords
+// GetN returns the current location in the list of possible passwords.
 func (s *sequencer) GetN() *big.Int {
 	s.mutex.Lock()
 	defer s.mutex.Unlock()
 
 	return new(big.Int).Set(s.n)
 }
 
-// GotoN overrides N.
+// GotoN overrides the current location in the list of possible passwords.
 func (s *sequencer) GotoN(n *big.Int) (string, error) {
 	s.mutex.Lock()
 	defer s.mutex.Unlock()