INTERLEAVE = 'interleave'
R1ONLY = 'r1-only'
R2ONLY = 'r2-only'
SEQUENTIAL = 'sequential'
MERGE = 'merge'
SEPARATE = 'separate'
READ_COMPLETE = 'read-complete'
R1 = 'r1'
R2 = 'r2'
PARTIAL = 'dx-partial'
DATA = 'data'
PATH = 'path'
ERROR = 'error'
COMPLETE = 'complete'
