diff --git a/config.go b/config.go
index 5c52818..4253907 100644
--- a/config.go
+++ b/config.go
@@ -74,6 +74,8 @@ func (ac *AppConfig) parseBindings() error {
 
 	switch {
 	case ac.Driver == "":
+	case ac.Driver == "exec":
+		driverProtocol = "exec"
 	case ac.Driver == "xdotool":
 	case strings.HasPrefix(ac.Driver, "osc://"):
 		addr, err := url.Parse(ac.Driver)
@@ -89,10 +91,14 @@ func (ac *AppConfig) parseBindings() error {
 		driverProtocol = "osc"
 		oscClient = osc.NewClient(hostParts[0], int(port))
 	default:
-		return fmt.Errorf(`invalid driver %q, use one of: "xdotool" (default), "osc://address:port"`, ac.Driver)
+		return fmt.Errorf(`invalid driver %q, use one of: "xdotool" (default), "exec", "osc://address:port"`, ac.Driver)
 	}
 
 	for key, value := range ac.Bindings {
+		if strings.HasPrefix(key, "_") {
+			continue
+		}
+
 		binding, description := bindingAndDescription(driverProtocol, value)
 		newBinding := &deviceBinding{heldButtons: make(map[int]bool), rawKey: key, rawValue: value, original: binding, description: description, driver: driverProtocol, oscClient: oscClient}
 
@@ -149,7 +155,7 @@ var oscDescriptionRE = regexp.MustCompile(`([^#]*)(\s*# *(.+))?`)
 
 func bindingAndDescription(protocol, input string) (string, string) {
 	re := xdoDescriptionRE
-	if protocol == "osc" {
+	if protocol == "osc" || protocol == "exec" {
 		re = oscDescriptionRE
 	}
 
diff --git a/config_test.go b/config_test.go
index 4d5cc7c..8f535d1 100644
--- a/config_test.go
+++ b/config_test.go
@@ -19,7 +19,7 @@ func TestBindingAndDescription(t *testing.T) {
 	}
 
 	for idx, test := range tests {
-		bind, desc := bindingAndDescription(test.in)
+		bind, desc := bindingAndDescription("xdo", test.in)
 		assert.Equal(t, test.bind, bind, "%d", idx)
 		assert.Equal(t, test.desc, desc, "%d", idx)
 	}
diff --git a/mapper.go b/mapper.go
index 642584f..2d0dc10 100644
--- a/mapper.go
+++ b/mapper.go
@@ -172,6 +172,9 @@ func (m *Mapper) EmitKeys(modifiers map[int]bool, keyDown int) error {
 func (m *Mapper) executeBinding(binding *deviceBinding) error {
 	time.Sleep(25 * time.Millisecond)
 	switch binding.driver {
+	case "exec":
+		fmt.Printf("EXEC: /bin/bash -c %q\n", binding.original)
+		return exec.Command("/bin/bash", "-c", binding.original).Run()
 	case "xdotool", "":
 		fmt.Println("xdotool key --clearmodifiers", binding.original)
 		return exec.Command("xdotool", "key", "--clearmodifiers", binding.original).Run()
diff --git a/sample_config.json b/sample_config.json
index ea7ab36..de2fcc0 100644
--- a/sample_config.json
+++ b/sample_config.json
@@ -91,12 +91,12 @@
             "__see_ardour_docs_for_actions": "http://manual.ardour.org/appendix/menu-actions-list/ and http://manual.ardour.org/using-control-surfaces/controlling-ardour-with-osc/osc-control/",
             "bindings": {
                 "F1": "/access_action Transport/record-roll",
-                "F2": "/transport_stop + /sleep 0.25 + /access_action Editor/playhead-to-previous-region-boundary + /sleep 0.05 + /access_action Common/finish-range + /sleep 0.05 + /jump_seconds -0.1 + /sleep 0.05 + /access_action Common/start-range + /sleep 0.05 + /access_action Editor/editor-cut # Clears Marks on Lightworks",
+                "F2": "/transport_stop + /sleep 0.25 + /access_action Editor/playhead-to-previous-region-boundary + /sleep 0.05 + /access_action Common/finish-range + /sleep 0.05 + /jump_seconds -0.1 + /sleep 0.05 + /access_action Common/start-range + /sleep 0.05 + /access_action Editor/editor-cut  # Stop recording and clear the last 0.05 second of recording (because it might catch the click of the Shuttle !)",
                 "M1+F2": "Cyrillic_YA  # Swap In-Out Marks",
 
-                "F3": "/access_action Editor/editor-cut + /access_action Editor/playhead-to-previous-region-boundary # Delete",
+                "F3": "/access_action Common/finish-range + /access_action Editor/playhead-to-range-start + /access_action Editor/editor-cut",
                 "M1+F3": "z  # Blackout",
-                "F4": "v  # Insert",
+                "F4": "/access_action Common/start-range + /sleep 0.05 + /access_action Editor/editor-cut  # Truncate end of clip",
                 "M1+F4": "b  # Replace",
                 "B2+F4": "f  # Clipboard Insert",
                 "B2+M1+F4": "g  # Clipboard Replace",