code: public String read(FontFileReader in) throws IOException {
          tag[0] = in.readTTFByte();
          tag[1] = in.readTTFByte();
          tag[2] = in.readTTFByte();
          tag[3] = in.readTTFByte();
  
          in.skip(4);    // Skip checksum
  
          offset = in.readTTFULong();
          length = in.readTTFULong();
          String tagStr = new String(tag, "ISO-8859-1");
  
          return tagStr;
      }
docs: Read Dir Tab, return tag name
  
  @param in The stream to read from
  @return The string read
  @throws IOException Indicates a failure to read from the stream