[texhax] query: multiline displays

[Philip G. Ratcliffe]

> ...
> emphasis on this line, something like
>
>              Y(i)= x(i) + ...
>                  =...
>                                 i= 1,..n,  j=1,.., ...


For this and 99% of math queries (i.e., how to do something not obviously
available) the "amsmath" apckage holds the answer.  It contains a variety of
more flexible math envoironments, more symbols, etc., etc., and the manual
is well-written: clear and concise.

Cheers,  Phil