diff --git a/LEGv8-Simulator/Utils/Interpreter.swift b/LEGv8-Simulator/Utils/Interpreter.swift
index 65ee5fe..08c84b8 100644
--- a/LEGv8-Simulator/Utils/Interpreter.swift
+++ b/LEGv8-Simulator/Utils/Interpreter.swift
@@ -62,6 +62,7 @@ class Interpreter: ObservableObject {
     }
     
     func buildLabelMap(_ text: String) {
+        labelMap = [:]
         start(text)
         
         while running {
diff --git a/LEGv8-Simulator/Utils/Lexer.swift b/LEGv8-Simulator/Utils/Lexer.swift
index 346e031..cce232d 100644
--- a/LEGv8-Simulator/Utils/Lexer.swift
+++ b/LEGv8-Simulator/Utils/Lexer.swift
@@ -40,7 +40,7 @@ class Lexer: ObservableObject {
         }
         
         // instruction is first item in line
-        let instruction: String = line[0].filter({ char in !specialCharacters.contains(char)})
+        let instruction: String = line[0].filter({ char in !specialCharacters.contains(char)}).lowercased()
         
         if instruction.contains("/") { // line is only comment
             cursor += 1
@@ -79,7 +79,7 @@ class Lexer: ObservableObject {
         var args: [String] = []
         
         for _arg in line[1...].map({ sub in String(sub)}) {
-            let arg = _arg.filter({ char in !specialCharacters.contains(char)}) // filter out special characters
+            let arg = _arg.filter({ char in !specialCharacters.contains(char)}).lowercased() // filter out special characters
             
             
             if arg.contains("/") { // comment
diff --git a/LEGv8-Simulator/Views/Registers/RegisterRowView.swift b/LEGv8-Simulator/Views/Registers/RegisterRowView.swift
index 8818131..d7c8b73 100644
--- a/LEGv8-Simulator/Views/Registers/RegisterRowView.swift
+++ b/LEGv8-Simulator/Views/Registers/RegisterRowView.swift
@@ -14,12 +14,24 @@ struct RegisterRowView: View {
     
     @State private var displayMode: String = "H"
     @State private var isPresented: Bool = false
+    @State private var note: String = ""
+    @State private var noteVisisble: Bool = false
     
     var body: some View {
         HStack {
             Text(name)
                 .font(.custom("Menlo Regular", size: 12))
             
+            TextField("Note...", text: $note)
+                .opacity(noteVisisble ? 1 : 0)
+                .onHover { hovering in
+                    if note == "" {
+                        withAnimation {
+                            noteVisisble = hovering
+                        }
+                    }
+                }
+            
             Spacer()
             
             HStack {
diff --git a/LEGv8-Simulator/Views/Settings/AboutView.swift b/LEGv8-Simulator/Views/Settings/AboutView.swift
index c627b37..bc786c4 100644
--- a/LEGv8-Simulator/Views/Settings/AboutView.swift
+++ b/LEGv8-Simulator/Views/Settings/AboutView.swift
@@ -8,7 +8,7 @@
 import SwiftUI
 
 struct AboutView: View {
-    let version: String = "1.2 (Release)"
+    let version: String = "1.3 (Release)"
     
     var body: some View {
         HStack {