HELPCTX(logging_filename));
    ctrl_radiobuttons(s, "What to do if the log file already exists:", 'e', 1,
		      HELPCTX(logging_exists),
		      dlg_stdradiobutton_handler, I(offsetof(Config,logxfovr)),
		      "Always overwrite it", I(LGXF_OVR),
		      "Always append to the end of it", I(LGXF_APN),
		      "Ask the user every time", I(LGXF_ASK), NULL);
    ctrl_checkbox(s, "Flush log file frequently", 'u',
		 HELPCTX(logging_flush),
		 dlg_stdcheckbox_handler, I(offsetof(Config,logflush)));

    if ((midsession && protocol == PROT_SSH) ||
	(!midsession && backends[3].name != NULL)) {
	s = ctrl_getset(b, "Session/Logging", "ssh",
			"Options specific to SSH packet logging");
	ctrl_checkbox(s, "Omit known password fields", 'k',
		      HELPCTX(logging_ssh_omit_password),