What are these methods used for?
(i) is Editable()
(ii) set Editable()
(iii) get Echo Char()
(i) is Editable() -Returns the setting (true/false) whether the user can edit the text in the text area.
(ii) set Editable() -Sets whether the user can edit the text in the text area.
(iii) get Echo Char() -Returns the echo character.