"""

This module contains constants for names of markups, and describes the
syntax of its values.

ALL_STRING



Name                      Value
======================================================================
TOKEN                     token number
SENTENCE                  sentence number
RBT                       part of speech
PORTER                    stem

ABBSYS                    long|abbrev
ABBREV                    long|abbrev|score
SUNDANCE_ROOT             root of word
SUNDANCE_TAG_SOURCE       where the tag came from
SUNDANCE_PART_OF_SPEECH   comma separated tags of speech
SUNDANCE_MARKUP           variable, e.g. SEGMENT|1-0|NP SEGMENT|SUBJ|None

"""

TOKEN = "TOKEN"
SENTENCE = "SENTENCE"
RBT = "RBT"
PORTER = "PORTER"

ABBREV = "ABBREV"
ABBSYS = "ABBSYS"
SUNDANCE_ROOT = "SUNDANCE_ROOT"
SUNDANCE_TAG_SOURCE = "SUNDANCE_TAG_SOURCE"
SUNDANCE_PART_OF_SPEECH = "SUNDANCE_PART_OF_SPEECH"
SUNDANCE_MARKUP = "SUNDANCE"