[OS X TeX] Using align with "or"

[Vic Norton]

On Apr 17, 2011, at 9:39 PM, Alain Schremmer wrote:

> But Companion two does not even mention \alignat. I just looked because I had been "doing it by hand", that is with a lot of \hspaces, and wanted to know if I had missed it.

_More Math Into LaTeX_, 4th Edition, by list member George Gratzer, devotes section 9.5.4 to "The alignat environment". Gratzer calls alignat one of the most important alignment environments.

Regards,

Vic