Not fixed yet. The typesetting issue (no orphans, widows, or stacks) in particular is quite intractable (Knuth wasn't able to come up with a hyphenation algori

Not fixed yet. The typesetting issue (no orphans, widows, or stacks) in particular is quite intractable (Knuth wasn't able to come up with a hyphenation algorithm which detects and prevents stacks, see the 2nd edition of _The LaTeX Companion_).