typegraph_stat_perc
typegraph_stat_perc("unmarked", stats.tgs_unmarked, n);
typegraph_stat_perc("known", stats.tgs_known, n);
typegraph_stat_perc("conjectured", stats.tgs_typed, n);
typegraph_stat_perc("conjectured fragments", stats.tgs_frag, n);
typegraph_stat_perc("known or conjectured",
typegraph_stat_perc("reachable unknown nodes",