wlfxb - a library for creating and processing of TCF data streams.
Copyright (C) Yana Panchenko.
This file is part of wlfxb.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
preserves the original structure of a written
text. Within the layer, a token sequence can be annotated as belonging to
some text structure element, such as to a page, a paragraph, a line, a title,
etc. textspan element represents text structure annotation on a token sequence.
The token sequence is specified by start token id and end token id. The type
of the text structure element is specified by the corresponding attribute.