22877eb0__Services___O_Reilly_Broadcast_Table_3__Command_Pipes_Command
[Description] Selects on pipeline among several based upon an XPath predicate on each alternative, using when and otherwise as template matches. Akin to the xsl:choose statement. [Command] 
choose
XProc: Drupal, XML Pipelines and RESTful Services - O'Reilly Broadcast
Command