User blog comment:Deedlit11/Ordinal Notations VI: Up to a weakly compact cardinal/@comment-24509095-20140702105435/@comment-3427444-20140704113341

For me, the definitions of C_{n+1}(α,β) and M(α) appear to be cut off from the page. You don't see the cutoff because you are (probably) using a wider monitor.