The purpose of Configuration is to configure component properties(set values on component properties). 

In the configuration explorer you can see all available configuration of a workflow* property. Explanation a table with list of property configuration:

Name	Data type	Desc
Local WF property URL	text	the ACUrl of local workflow property
Value	value	the configuration value
Expression	image	the configuration expression
Comment	value	the comment of a configuraion
Classname/ID	text	the name of datatype

In configuration editor you can change available configuraion properties for selected WF property. Over button New config you can add a new configuration, on button Delete Attribute you can delete a existing configuration.