This program, utility or function does not have a useful manpage. There is however documentation available for it in the libpam-doc package, which contains The Linux-PAM System Administrator's Guide, The Linux-Pam Application Developer's Guide, and The Linux-Pam Module Writer's Guide. If you are a competent and accurate writer and are willing to spend the time reading the existing source code and documentation and to write good manpages please write a better man page than this one. Please contact the package maintainer in order to avoid several people working on the same manpage.
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