EMA C++ Configuration Guide : 2 Configuration Overview : 2.3 Default Behaviors
 
2.3 Default Behaviors
When the Enterprise Message API library needs a parameter, it behaves according to its hard-coded configuration. You can change the API behavior by providing a valid alternate value either through the use of EmaConfig.xml, function calls, or programmatic methods. For default values for each of the parameters, see the appropriate Configuration Group section.