| who | identifies the character or characters performing the movement. | 
|  | Datatype: IDREFS | 
|  | Values: The IDREFS are derived from the ID attribute on the role
elements in the cast list. | 
|  | Default: #REQUIRED | 
| type | characterizes the movement, for example as an entrance or exit. | 
|  | Datatype: CDATA | 
|  | Legal values: | | entrance | character is entering the stage. |  | exit | character is exiting the stage. |  | onstage | character moves on stage | 
 | 
|  | Default: #IMPLIED | 
| where | specifies the direction of a stage movement. | 
|  | Datatype: CDATA | 
|  | Legal values: | | L | stage left |  | R | stage right |  | C | centre stage | 
 | 
|  | Default: #IMPLIED | 
| Note | Full blocking information will normally require combinations
of values, (for example ``UL'' for ``upper stage left'') and may
also require more detailed encoding of speed, direction etc.  Full
documentation of any coding system used should be provided in the
header. | 
| perf | identifies the performance or performances in which this movement
occurred as specified. | 
|  | Datatype: IDREFS | 
|  | Values: The ID of a <performance>  element. | 
|  | Default: #IMPLIED |