diff --git a/internals.md b/internals.md
index 5d60019..9e9a678 100644
--- a/internals.md
+++ b/internals.md
@@ -35,11 +35,10 @@ MIDI IN:
         if SYSEX_PRESET:
             resetExp
             updateUI            
-                updateMeta
-                    showPreset
-                        setPresetClean
-                            add .sel if pc>0
-                            add .on if communication ok
+                updatePresetSelector
+                    setPresetClean
+                        add .sel if pc>0
+                        add .on if communication ok
                 updateControls
         if SYSEX_GLOBALS:
             updateGlobalSettings
@@ -61,10 +60,10 @@ MIDI DEVICE:
                 connectInputDevice
                     disconnectInputPort
                         remove listeners
-                        showPreset
+                        updatePresetSelector
                     connectInputPort
                         setMidiInputPort
-                        showPreset
+                        updatePresetSelector
                     syncIfNoPreset
                         if preset === 0
                             requestPreset
@@ -84,11 +83,10 @@ MIDI DEVICE:
                 initFromBookmark
                     resetExp
                     updateUI
-                        updateMeta
-                            showPreset
-                                setPresetClean
-                                    add .sel if pc>0
-                                    add .on if communication ok
+                        updatePresetSelector
+                            setPresetClean
+                                add .sel if pc>0
+                                add .on if communication ok
                         updateControls
                         
     on disconnected:
@@ -96,8 +94,8 @@ MIDI DEVICE:
         port is input:
             disconnectInputPort
                 remove listeners
-                showPreset
+                updatePresetSelector
         port is output:
             disconnectOutputPort
-                showPreset
+                updatePresetSelector
         updateSelectDeviceList            
diff --git a/src/debug.js b/src/debug.js
index 8cb5d0e..def70f7 100644
--- a/src/debug.js
+++ b/src/debug.js
@@ -1,5 +1,5 @@
 
-export const TRACE = false;
+export const TRACE = true;
 
 export function log() {
     if (TRACE) console.log(...arguments);
diff --git a/src/index.html b/src/index.html
index 19a7274..4cf3398 100644
--- a/src/index.html
+++ b/src/index.html
@@ -374,7 +374,7 @@
                     <div id="exp-close" class="exp-switch"><div class="btx" id="exp-close-bt" title="Click to switch to edit the EXP (toe-down) values">down</div></div>
                     <div id="exp-open">toe up</div>
                     <div id="cc-4-value" class="slider-value"></div>
-                    <div id="exp-copy" class="btx" title="Click to copy the toe-up (normal) values to the tow-down values.">copy</div>
+                    <div id="exp-copy" class="btx" title="Click to copy the toe-up (normal) values to the toe-down values.">copy</div>
                 </div>
             </div>
 
diff --git a/src/main.js b/src/main.js
index dd12550..c83b81c 100644
--- a/src/main.js
+++ b/src/main.js
@@ -19,7 +19,7 @@ import "./css/main.css";
 import "./css/zoom.css";
 import "./css/grid-default.css";
 import "./css/grid-global-settings.css";
-import {setPresetDirty, showPreset} from "./ui_presets";
+import {setPresetDirty, updatePresetSelector} from "./ui_presets";
 import * as Utils from "./utils";
 import {initZoom} from "./ui_zoom";
 
@@ -96,7 +96,7 @@ function connectInputPort(input) {
 
     log(`%cconnectInputPort: ${input.name} is now listening on channel ${preferences.midi_channel}`, "color: orange; font-weight: bold");
     setCommunicationStatus(true);
-    showPreset();
+    updatePresetSelector();
     appendMessage(`Input ${input.name} connected on MIDI channel ${preferences.midi_channel}.`);
 }
 
@@ -107,7 +107,7 @@ function disconnectInputPort() {
         p.removeListener();    // remove all listeners for all channels
         setMidiInputPort(null);
         setCommunicationStatus(false);
-        showPreset();
+        updatePresetSelector();
         appendMessage(`Input disconnected.`);
     }
 }
@@ -160,7 +160,7 @@ function connectOutputPort(output) {
     log("connectOutputPort");
     setMidiOutputPort(output);
     log(`%cconnectOutputPort: ${output.name} can now be used to send data on channel ${preferences.midi_channel}`, "color: orange; font-weight: bold");
-    showPreset();
+    updatePresetSelector();
     appendMessage(`Output ${output.name} connected on MIDI channel ${preferences.midi_channel}.`);
 }
 
@@ -170,7 +170,7 @@ function disconnectOutputPort() {
         log("disconnectOutputPort()");
         setMidiOutputPort(null);
         log("disconnectOutputPort: connectOutputPort: midi_output can not be used anymore");
-        showPreset();
+        updatePresetSelector();
         appendMessage(`Output disconnected.`);
     }
 }
diff --git a/src/midi_in.js b/src/midi_in.js
index cbfbc38..2261b6a 100644
--- a/src/midi_in.js
+++ b/src/midi_in.js
@@ -1,5 +1,5 @@
 import {showMidiInActivity} from "./ui_midi_activity";
-import {showPreset} from "./ui_presets";
+import {updatePresetSelector} from "./ui_presets";
 import {logIncomingMidiMessage} from "./ui_midi_window";
 import {getLastSendTime} from "./midi_out";
 import {updateModelAndUI, updateUI} from "./ui";
@@ -55,7 +55,7 @@ export function handlePC(msg) {
     showMidiInActivity();
     logIncomingMidiMessage("PC", [msg.value]);
     MODEL.setPresetNumber(msg.value);
-    showPreset();
+    updatePresetSelector();
 }
 
 /**
diff --git a/src/midi_out.js b/src/midi_out.js
index 0466ea4..c869698 100644
--- a/src/midi_out.js
+++ b/src/midi_out.js
@@ -143,7 +143,7 @@ export function fullUpdateDevice() {
             log(`fullUpdateDevice done`);
             fullUpdateRunning = false;
             if (!silent && midi_output) {
-                appendMessage("Current settings sent to Enzo.")
+                appendMessage("Current settings sent to the pedal.")
             }
         } else {
             // log(`fullUpdateDevice: send CC ${i}`);
@@ -184,11 +184,11 @@ export function sendPC(pc) {
         appendMessage(`Preset ${pc} selected.`);
 
         if (!getMidiInputPort()) {
-            appendMessage("Unable to receive the preset from Enzo.");
+            appendMessage("Unable to receive the preset from the pedal.");
         }
 
     } else {
-        appendMessage(`Unable to send the PC command to Enzo.`);
+        appendMessage(`Unable to send the PC command to the pedal.`);
         log(`(send program change ${pc})`);
     }
 
diff --git a/src/ui.js b/src/ui.js
index 0be9132..4f4cc1d 100644
--- a/src/ui.js
+++ b/src/ui.js
@@ -1,5 +1,5 @@
 import MODEL from "./model";
-import {showPreset, setPresetDirty, setupPresetSelectors} from "./ui_presets";
+import {updatePresetSelector, setPresetDirty, setupPresetSelectors} from "./ui_presets";
 import {knobs, setupKnobs} from "./ui_knobs";
 import {
     setupMomentarySwitches,
@@ -51,7 +51,7 @@ export function handleUserAction(control_type, control_number, value) {
  * @param value
  * @param mappedValue
  */
-export function updateControl(control_type, control_number, value, mappedValue) {   //TODO: check that control_number is always an int and not a string
+export function updateControl(control_type, control_number, value, mappedValue) {
 
     //FIXME: no need for control_type
 
@@ -67,6 +67,7 @@ export function updateControl(control_type, control_number, value, mappedValue)
         knobs[id].value = value;        //TODO: doesn't the knob update its value itself?
     } else {
 
+        //TODO: check that control_number is always an int and not a string
         const num = parseInt(control_number, 10);
 
         if (/*control_type === "cc" &&*/ num === 4) {    //TODO: replace this hack with better code
@@ -94,7 +95,6 @@ export function updateControl(control_type, control_number, value, mappedValue)
                 } else if (c.is(".swm")) {
                     log(`updateControl(${control_type}, ${num}, ${value}) .swm`);
                     updateMomentaryStompswitch(`${id}-${mappedValue}`, mappedValue);
-                    // log(typeof mappedValue, mappedValue === 0);
                     // if (mappedValue !== 0) {
                     //     log("will call updateMomentaryStompswitch in 200ms");
                         setTimeout(() => updateMomentaryStompswitch(`${id}-${mappedValue}`, 0), 200);
@@ -130,18 +130,11 @@ export function updateControls(onlyTwoValuesControls = false) {
     if (TRACE) console.groupEnd();
 } // updateControls()
 
-/**
- * Update the patch number and patch name displayed in the header.
- */
-function updateMeta() {
-    showPreset();
-}
-
 /**
  * Update the UI from the MODEL controls values.
  */
 export function updateUI() {
-    updateMeta();
+    updatePresetSelector();
     updateControls();
     log("updateUI done");
 }
@@ -243,7 +236,6 @@ export function setupUI(channelSelectionCallback, inputSelectionCallback, output
     setupAppPreferences();
     setupHelpPanel();
     setupMenu();
-    // setupExp();
     setupSelects(channelSelectionCallback, inputSelectionCallback, outputSelectionCallback);
     setupKeyboard();
 
diff --git a/src/ui_exp.js b/src/ui_exp.js
index d14a855..879ca6e 100644
--- a/src/ui_exp.js
+++ b/src/ui_exp.js
@@ -52,7 +52,7 @@ export function toggleExpEditMode() {
         updateDevice("cc", MODEL.control_id.exp_pedal, 0);
 
         showExpValues(false);
-        appendMessage("You are now editing the normal values");
+        appendMessage("You are now editing the normal values", true);
 
     } else {
 
@@ -65,7 +65,7 @@ export function toggleExpEditMode() {
         updateDevice("cc", MODEL.control_id.exp_pedal, 127);
 
         showExpValues(true);
-        appendMessage("You are now editing the EXP (tow-down) values", true);
+        appendMessage("You are now editing the EXP (toe down) values", true);
 
     }
 }
diff --git a/src/ui_presets.js b/src/ui_presets.js
index 76b1166..f8852cc 100644
--- a/src/ui_presets.js
+++ b/src/ui_presets.js
@@ -12,6 +12,18 @@ import {getMidiInputPort} from "./midi_in";
     The .dirty flag is cleared when we receive a preset (via sysex) or when we load a preset file.
 */
 
+/**
+ * Remove all flags and highlight color from the preset selectors.
+ */
+export function resetPresetSelectors() {
+    log("resetPresetSelectors()");
+    $(".preset-id").removeClass("dirty on sel");
+    dirty_cache = false;
+}
+
+/**
+ * Remove any dirty indicator from the preset selectors
+ */
 export function setPresetClean() {
     log("setPresetClean()");
     $(".preset-id").removeClass("dirty");
@@ -20,6 +32,9 @@ export function setPresetClean() {
 
 let dirty_cache = true;    // setPresetDirty is called each time a control is modified. This variable is used to minimize the DOM changes.
 
+/**
+ * Show the dirty indicator on the current preset selector
+ */
 export function setPresetDirty() {
     if (!dirty_cache) {
         log("setPresetDirty()");
@@ -29,13 +44,14 @@ export function setPresetDirty() {
     }
 }
 
-export function showPreset() {
-    log("showPreset()");
+/**
+ * Update the preset selector to show the current pedal's preset.
+ * Highlight the preset selector if the communication is up with the pedal.
+ */
+export function updatePresetSelector() {
+    log("updatePresetSelector()");
 
-    // const elems = $(".preset-id");
-    // elems.removeClass("on sel dirty");
-    // dirty_cache = false;    // because we removed .dirty
-    setPresetClean();
+    resetPresetSelectors();
 
     const n = MODEL.getPresetNumber();
     if (n) {
@@ -43,8 +59,6 @@ export function showPreset() {
         e.addClass("sel");
         if (getMidiInputPort() && getMidiOutputPort()) {
             e.addClass("on");
-        // } else {
-        //     elems.removeClass("on");
         }
     }
 }
@@ -56,7 +70,7 @@ export function showPreset() {
 export function presetSet(n) {
     log(`presetSet(${n})`);
     MODEL.setPresetNumber(n);
-    showPreset();
+    updatePresetSelector();
     sendPC(n);
 }