-format and may include one (and only one) %s conversion.
-This conversion will be substituted with a string random
-characters from [A\-Za\-z0\-9./]. For example, "%.2s"
-provides a two character salt and "$1$%.8s" tells some
-versions of crypt(3) to use an MD5 algorithm and provides
-8 random characters of salt. The default is "%s", which
-provides 31 characters of salt.
+format and may include one (and only one)
+.B %s
+conversion.
+This conversion will be substituted with a string of random
+characters from [A\-Za\-z0\-9./]. For example,
+.RB ' %.2s '
+provides a two character salt and
+.RB ' $1$%.8s '
+tells some
+versions of
+.BR crypt (3)
+to use an MD5 algorithm and provides
+8 random characters of salt.
+The default is
+.RB ' %s ' ,
+which provides 31 characters of salt.
+.TP
+.BI \-n
+Omit the trailing newline; useful to pipe the credentials
+into a command.