A method of displaying an available character capacity in a character entry window includes calculating an available character capacity based on characters entered by a user, displaying the entered characters in a character entry window, and displaying an indication of the available character capacity at a position in the character entry window adjacent to the last character entered by the user. A method of displaying an available character capacity on a graphical user interface includes calculating an available character capacity based on characters entered by a user, displaying the entered characters on the graphical user interface, and displaying an object in the graphical user interface in a specific color corresponding to the calculated available character capacity.