Is it possible to define a custom tag inside the XML status settings?

The XML status setting file contains 

<StateDefinition>
<DraftStates>
<Status Elm="VSTATUSDRAFT" value="Draft"/>
<Status Elm="VSTATUSTOBEREVIEWED" value="To be reviewed"/>
<Status Elm="VSTATUSTOBETRANSLATED" value="To be translated"/>
<Status Elm="VSTATUSINTRANSLATION" value="In translation"/>

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Is there any option to create new custom state definitions like "Expired" or "Processing" ?