CIAO::Lib::Param CIAO::Lib::Param is a Perl interface to the parameter library (cxcparam) shipped with the Chandra Interactive Analysis of Observations (CIAO) software package. It implements an interface to IRAF (Image Reduction and Analysis Facility) style parameter files. This document does not fully discuss the format and usage of parameter files; see for more information. CIAO::Lib::Param provides both object oriented and quick and dirty procedural interfaces. See the "OBJECT INTERFACE" and "PROCEDURAL INTERFACE" sections for the two interfaces. The Perl interface presents unified error reports from the underlying cxcparam library. If an error is encountered, the module will throw an exception via croak(). For simple applications, simply not catching the exception with "eval{}" will cause the application to terminate. For more complicated handling, one can use the exception (which is a CIAO::Lib::Param::Error object) to determine more information about what happened. 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) 2005 by Smithsonian Astrophysical Observatory. This is free software, licensed under: The GNU General Public License, Version 3, June 2007