22877eb0__Services___O_Reilly_Broadcast_Table_3__Command_Pipes_Command
[Description] An option is analogous to an XSLT parameter - it is variable that can be set by a user, or set to a default value by the XProc engine directly. [Command] 
option
XProc: Drupal, XML Pipelines and RESTful Services - O'Reilly Broadcast
Command