diff --git a/cmd/micro/micro.go b/cmd/micro/micro.go
index 80c4db39..7df51480 100644
--- a/cmd/micro/micro.go
+++ b/cmd/micro/micro.go
@@ -17,6 +17,13 @@ import (
 	"github.com/zyedidia/tcell/encoding"
 )
 
+const (
+	synLinesUp           = 75  // How many lines up to look to do syntax highlighting
+	synLinesDown         = 75  // How many lines down to look to do syntax highlighting
+	doubleClickThreshold = 400 // How many milliseconds to wait before a second click is not a double click
+	undoThreshold        = 500 // If two events are less than n milliseconds apart, undo both of them
+)
+
 var (
 	// The main screen
 	screen tcell.Screen