package seedu.whatnow.logic.commands;

public class UndoCommand extends Command{

	@Override
	public CommandResult execute() {
		// TODO Auto-generated method stub
		return null;
	}

}

@@ -75,16 +75,391 @@
 mmand%7B%0A%0A
+%09public static final String COMMAND_WORD = %22undo%22;%0A%0A%09public static final String MESSAGE_USAGE = COMMAND_WORD + %22: Undo previous task in WhatNow %22%0A%09%09%09+ %22Parameters: No parameters%22%0A%09%09%09+ %22Example: %22 + COMMAND_WORD;%0A%0A%09public static final String MESSAGE_SUCCESS = %22Undo Successfully%22;%0A%09public static final String MESSAGE_FAIL = %22Undo failure due to unexisting previous commands%22;%0A
 %09@Overri

Modify UndoCommand