license()
licence()RShowDoc("COPYING"). Version 3 of the
license can be displayed by RShowDoc("GPL-3"). A small number of files (some of the API header files) are distributed
under the LESSER GNU GENERAL PUBLIC LICENSE, version 2.1 or later. A
copy of this license is in file $R_SHARE_DIR/licenses/LGPL-2.1
and can be viewed by RShowDoc("LGPL-2.1"). Version 3 of the
license can be displayed by RShowDoc("LGPL-3").