How would you clear a string or previous text?

Hey guys, How would clear all the text? I don't really know how to do it

 public Canvas myCanvas;
     public Text myText;
     // Creates varibles to view more text
     private string display = "";
     private bool engagedText;
     List<string> textEvents;
     // Creates varibles inorder to reconised input commands
     public InputField inputfield;
     // Creates a Command string that holds commands
     private Dictionary<string, System.Action<string,string>> commands;
 
     protected void Awake()
     {
         //Holds the command string and points them to their methods and functions
         // Listen when the inputfield is validated
         commands = new Dictionary<string, System.Action<string,string>>();
         commands.Add( "help", onHelpTyped );
         inputfield.onEndEdit.AddListener( OnEndEdit );
     }
 
     void Start () {
         textEvents = new List<string>();
 
         textEvents.Add ("Welcome to my App");
         textEvents.Add ("Your currently offline (console), login to go online");
         textEvents.Add ("Type help for help");
         engagedText = true;
     }
         
     void Update () {
         if(engagedText)
         {
             AddText();
             engagedText = false;
         }
     }
         
     private void OnEndEdit( string input )
     {
         // Only consider onEndEdit if Submit (Enter/return) key being press
         if ( !Input.GetButtonDown( "Submit" ) )
             return;
 
         bool commandFound = false;
 
         // If the command is entered,it finds the correct command
         foreach ( var item in commands )
         {
             if ( item.Key.ToLower().StartsWith( input.ToLower() ) )
             {
                 commandFound = true;
                 item.Value( item.Key, input );
                 break;
             }
         }
 
         // If command is not founded, perform this task & clear the InputField
         if ( !commandFound )
             textEvents.Add ("Command not founded");
             engagedText = true;
 
             inputfield.text = "";
     }
 
     // Help function 
     private void onHelpTyped( string command, string input )
     {
         textEvents.Add ("hi");
         textEvents.Add("hello");
         textEvents.Add("mate");
         engagedText = true;
     }
 
     
    
    
 
     // Add the new text while keeping the old text.
     void AddText()
     {
         display = "";
         foreach(string msg in textEvents)
         {
             display = display.ToString () + msg.ToString() + "\n";
         }
         myText.text = display;
     }
 
  }