I'm searching for packages for formatting interlinear text with an arbitrary number of lines. So far, it seems that the packages
expex only format up to three aligned lines. (
\glll but no
\gllll, for example).
I've found references to SIL's ITF software (http://www.sil.org/computing/catalog/show_software.asp?id=17) which supposedly accomplishes this, but no real instructions on usage.
This task can obviously be accomplished using the tabular environment, but I'm trying to figure out if there are any established packages which provide an environment that carries out most of the dirty work.