Defaults Workflow Operation
The defaults operation is used to define default workflow configuration values that are in effect in cases where a workflow instance is started without the user interface being invoked, with the result that no configuration of the workflow instance has taken place. The defaults specified by this handler will be applied for configuration keys that have not been specified but won't overwrite existing values.
Tags and flavors can be used in combination.
|This would set the workflow configuration "key" to the value "hello world" if - and only if - the key is undefined.
description="Applying default values">
<configuration key="key">hello world</configuration>