function addString($string_to_add){
		settype($string_to_add,"string");
		if(strlen($string_to_add)>0){
			$this->_Buffer[] = new StringBufferItem($string_to_add);
		}
	}
function addString($string_to_add){
		settype($string_to_add,"string");
		if(strlen($string_to_add)>0){
			$this->_Buffer[] = new StringBufferItem($string_to_add);
		}
	}
function addString ( $ string_to_add ) { settype ( $ string_to_add , "string" ) ; if ( strlen ( $ string_to_add ) > 0 ) { $ this -> _Buffer [ ] = new StringBufferItem ( $ string_to_add ) ; } }
Adds another string to the buffer.

@param string $string_to_add
Adds another string to the buffer .