Bit of cleanup and comments

Assets/Scripts/SpellingBeeController.cs

@@ -52,6 +52,7 @@ public class SpellingBeeController : MonoBehaviour {
     private bool gameOver;
 
     // Amount of seconds user gets per letter of the current word
+    // Set to 1 for testing; should be increased later
     private int secondsPerLetter = 1;
 
     // Counter that keeps track of how many words have been spelled correctly
@@ -66,6 +67,7 @@ public class SpellingBeeController : MonoBehaviour {
         // We use -1 instead of 0 so SetRandomWord can simply increment it each time
         spelledWords = -1;
         gameOver = false;
+        input.text = "";
         gameOverPanel.SetActive(false);
         replayButton.onClick.AddListener(() => Start());
 
@@ -124,6 +126,7 @@ public class SpellingBeeController : MonoBehaviour {
         }
     }
 
+    // Delete all letter objects
     void DeleteWord() {
         for (int i = 0; i < currentWord.Length; i++) {
             Destroy(letters[i]);

Assets/Scripts/SpellingBeeThemeSelectionController.cs

@@ -9,7 +9,6 @@ public class SpellingBeeThemeSelectionController : MonoBehaviour {
     private int buttonWidth = 600;
 
     private int canvasWidth = 1920;
-    private int canvasHeight = 1080;
 
     // Start is called before the first frame update
     void Start() {