 <b><a href="../../../../org/activiti/engine/ManagementService.html" title="interface in org.activiti.engine"><code>ManagementService</code></a>: </b> Exposes engine admin and maintenance operations,
    which have no relation to the runtime exection of business processes<br/>
    
    <b><a href="../../../../org/activiti/engine/HistoryService.html" title="interface in org.activiti.engine"><code>HistoryService</code></a>: </b> Exposes information about ongoing and past process instances.<br/>
    
    <b><a