strUsage+=HelpMessageOpt("-par=<n>",strprintf(_("Set the number of script verification threads (%u to %d, 0 = auto, <0 = leave that many cores free, default: %d)"),
strUsage+=HelpMessageOpt("-txexpirynotify=<cmd>",_("Execute command when transaction expires (%s in cmd is replaced by transaction id)"));
strUsage+=HelpMessageOpt("-prune=<n>",strprintf(_("Reduce storage requirements by pruning (deleting) old blocks. This mode disables wallet support and is incompatible with -txindex. "