Alien::LibCIAORegion This module finds or builds the *region* library extracted from the Chandra Interactive Analysis of Observations (CIAO) software package produced by the Chandra X-Ray Center (CXC). See for more information. Unfortunately, there is no documentation accompanying the library. The region library is itself released under the GPL, version 3. See the enclosed copyright information. INSTALLATION This is a Perl module distribution. It should be installed with whichever tool you use to manage your installation of Perl, e.g. any of cpanm . cpan . cpanp -i . Consult http://www.cpan.org/modules/INSTALL.html for further instruction. Should you wish to install this module manually, the procedure is perl Makefile.PL make make test make install COPYRIGHT AND LICENSE This software is Copyright (c) 2020 by Smithsonian Astrophysical Observatory. This is free software, licensed under: The GNU General Public License, Version 3, June 2007