flag
The value for the flag depends on the type of the source object. For example, if the source object is a node, then the flag can be viz.ABS_PARENT or viz.ABS_GLOBAL.
This command will set the option flags for the source object. The source object will use the flag to determine how to retrieve the data. By default, the source flag has no options set.
Note: If no orientation flag is specified for a viewpoint, then it will get the data from viz.VIEW_ORI