[luatex] TLT, TRT, RTT and LTL

[Javier Bezos]

> \bodydir
> **
> Can this be different to \pagedir? If it is different get warning
> warning  (backend):
>    pagedir differs from bodydir, the output may be placed wrongly on the page
> **

This is a good question. I wonder if this distinction is just
an abstract one or there are some use cases where they
would take different values. Perhaps one of them could
be horizontal and the other vertical?

> \linedir
> *** not documented at all ??***

It _is_ documented :-).

Javier