anchor.diff:  -spec work_dir() -> file_path().
   work_dir() -> call(dir).
   
  +-spec dotdir() -> file_path().
  +dotdir() ->
  +    call(dotdir).
  +
   -spec download_dir() -> file_path().
   download_dir() -> call(download_dir).
   
  
positive.code: -export([dht/0,
  	 dht_port/0,
  	 dht_state_file/0,
  	 dirwatch_interval/0,
  	 download_dir/0,
  	 fast_resume_file/0,
  
negative.code: 	 webui_address/0,
  	 webui_log_dir/0,
  	 webui_port/0,
           use_upnp/0,
  	 work_dir/0]).
  
  %% API
  