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encryption algorithm is chosen for the passwords. Document the new -c and -s options. Add a reference to login.defs(5). * man/login.defs.5.xml: Document the ENCRYPT_METHOD, MD5_CRYPT_ENAB, SHA_CRYPT_MIN_ROUNDS, and SHA_CRYPT_MAX_ROUNDS variables. * etc/login.defs: Indicate that MD5_CRYPT_ENAB is deprecated. Document the relationship with PAM for MD5_CRYPT_ENAB and ENCRYPT_METHOD.