```
\fB\-par=\fR<n>
.IP
Set the number of script verification threads (\fB\-10\fR to 15, 0 = auto, <0 =
leave that many cores free, default: 0)
```

`\fB` makes the `-10` bold, as if it were a parameter rather than a value.

(Additionally, the `-10` comes from the system of whoever ran the gen-manpages script, and should probably be generated deterministically here...)
if (indexes_start_block) {
        LOCK(::cs_main);
        const CBlockIndex* start_block = *indexes_start_block;
        if (!start_block) start_block = chainman.ActiveChain().Genesis();
        if (!chainman.m_blockman.CheckBlockDataAvailability(*index_chain.Tip(), *Assert(start_block))) {
            return InitError(strprintf(Untranslated("%s best block of the index goes beyond pruned data. Please disable the index or reindex (which will download the whole blockchain again)"), older_index_name));
        }
    }
     Start threads
    for (auto index : node.indexes) if (!index->StartBackgroundSync()) return false;
    return true;
}