-to the pixie as a request; a reply is read from the pixie and printed
-on stdout. If no command-line arguments are given, requestss are read
-interactively from stdin and sent to the pixie; the pixie's responses
-are printed on stdout.
+to the pixie as a request; a reply is read from the pixie and formatted:
+information is written to standard output; errors are reported via
+standard error and the exit status. If no command-line arguments are
+given, requestss are read interactively from stdin and sent to the
+pixie; the pixie's responses are printed on stdout uninterpreted.
+.TP
+.B "\-P, \-\-passphrase"
+Connect to a running pixie and request the passphrase with tag
+.IR tag .
+If no pixie is running then request the passphrase from the terminal.
+Print the result on standard output, followed by a newline.
+.TP
+.B "\-PP, \-\-verify-passphrase"
+Connect to a running pixie and request verification of the passphrase
+with tag
+.IR tag .
+If no pixie is running, request the passphrase from the terminal. Print
+the result on standard output, followed by a newline.