Technicians who specialize in coding are called medical coders or coding specialists. Intermediate level coders have their work audited periodically by an Advanced coder. An advanced coder is also able to train entry-level coders. Random errors are caused by unintended mistakes by respondents, interviewers and/or coders. She also worked with the designers and coders on the tracks. Some medical coders elect to be certified by more than one society. These rules are complex and not widely understood by most HTML coders. Most popular types of compression used in practice now use adaptive coders. Other voice coders can be supported in terminals. WebORB is an integration server developed and maintained by Midnight Coders Incorporated. Despite the work involved, Satterthwaite had three uninvolved coders. Core Design collaborated with ten coders from EA Japan in making the game. These are created by volunteer coders on the program's discussion board, the paint.net Forum. Many FEC coders also continuously measure the current BER. "Toll quality" voice coders, such as ITU G.729, are used in many telephone networks.