code: public void inlinePrint(Object o) {
      if(inline.length() > 0) {
        inline.append(SEPARATOR);
      }
      // remove newlines
      String str = o.toString().replace(NEWLINE, " ");
      // escaping
      str = str.replace("\\", "\\\\").replace("\"", "\\\"");
      // when needed, add quotes.
      if(str.contains(SEPARATOR)) {
        inline.append('"').append(str).append('"');
      }
      else {
        inline.append(str);
      }
    }
docs: Print data into the inline part of the file. Data is sanitized: newlines
  are replaced with spaces, and text containing separators is put in quotes.
  Quotes and escape characters are escaped.
  
  @param o object to print