public String getKeyString() {
		String s = new String();
		int state = 1;
		char ch;
		while ( true ) {
			try {
				ch = (char)this.fr.read();
			} catch (IOException e) {
				e.printStackTrace();
				return null;
			}
			if ( ch == ' ') {
				state = 0;
			}
			else if ( ch == '<' ) {
				state = 1;
				s = new String();
			}
			else if ( ch == '>' ) {
				return s;
			}
			else if ( state == 1 ){
				s += ch;
			}
		}
	}