anchor.diff:  ```erlang
   {web_auth_url, "${settings.base_url}/login.html"}.
   ```
  +The *Settings* _configuration set_ also hosts a number of _elements_ which
  +are added by the testing framework dynamically. See the *System Values* section
  +below for more details.
   
   == Resource Configuration Files
   
  
positive.code: *Resources Configuration Files* are sources from +./resources/*.resource+ by
  default, though like most config locations, this can be overridden by the
  current *Profile* (more on this later).
  
  == Profiles
  
  
negative.code: 
  In this configuration (above), the _top level_ entries +name, age, roles+ are 
  all _configuration elements_, but the +person, employee+ tuples are usually
  referred to as _sub-elements_ for clarity. Where complex nested structures are
  used, we also tend to refer to _sub-elements_ as _configuration sections_,
  reflecting their use as containers for other _sub-elements_.
  
  Configurations are normally grouped by the 
  [[*SysTest* Config Server|systest_config]] and we refer to these groupings as a
  _configuration set_. This name reflects the fact that each 
  _configuration element's_ key can occur only once.
  
  == Settings
  
  