1 files changed, 13 insertions, 0 deletions
diff --git a/lib/history.go b/lib/history.go
new file mode 100644
index 0000000..abc081f
--- /dev/null
+++ b/lib/history.go
@@ -0,0 +1,13 @@
+package lib
+
+// History represents a list of elements ordered by time.
+type History interface {
+	// Add a new element to the history
+	Add(string)
+	// Get the next element in history
+	Next() string
+	// Get the previous element in history
+	Prev() string
+	// Reset the current location in history
+	Reset()
+}