WFC copyright and licensing notice
==================================

Copyright (C) 2026 WEIAN DATA TECH (Beijing) Co., Ltd.
(惟安数据科技（北京）有限公司)
Contact: contact@weiandata.com

WFC source code, documentation, tests, and bundled simulated data are
copyrighted by WEIAN DATA TECH (Beijing) Co., Ltd. and distributed under the
GNU General Public License version 2 or, at the recipient's option, any later
version (GPL >= 2).

External optional dependencies
------------------------------

WFC can integrate with the separately distributed R packages listed below.
Their source code is not bundled in WFC, and their authors and copyright
holders retain all rights in those packages.

Package: cli
Use: optional progress display
Upstream project: https://CRAN.R-project.org/package=cli
License: MIT + file LICENSE

Package: covr
Use: optional test coverage reporting
Upstream project: https://CRAN.R-project.org/package=covr
License: MIT + file LICENSE

Package: generics
Use: optional generic-method interoperability
Upstream project: https://CRAN.R-project.org/package=generics
License: MIT + file LICENSE

Package: knitr
Use: vignette generation
Upstream project: https://CRAN.R-project.org/package=knitr
License: GPL

Package: rmarkdown
Use: vignette rendering
Upstream project: https://CRAN.R-project.org/package=rmarkdown
License: GPL-3

Package: survey
Use: optional survey-design interoperability and numerical comparison
Upstream project: https://CRAN.R-project.org/package=survey
License: GPL-2 | GPL-3

Package: testthat
Use: package test suite
Upstream project: https://CRAN.R-project.org/package=testthat
License: MIT + file LICENSE

R packages parallel, stats, and utils are part of R. These dependency
references do not imply endorsement of WFC by the external package authors.
The dependency review was completed on 2026-07-14.

License
-------

The complete WFC package is distributed under the GNU General Public License
version 2 or, at the recipient's option, any later version (GPL >= 2). Standard
copies of the GPL are supplied with R and are available at
https://www.R-project.org/Licenses/.

Copyright in WFC belongs to WEIAN DATA TECH (Beijing) Co., Ltd. Copyright in
external dependencies remains with their respective holders.