Q: long table and chemical formula

[Wonil Chang]

Hello all,

I need to convert a long data file (more than 100 rows and 5 columns) to a
table in lyx. I tried to insert tabular by clicking on the table menubar, but
the maximum row configured by default is 50. How can I increase the limit?

I have to use subscripts and superscripts for chemical formula very often. Is
there any package that can make my life a little bit easier?

Thanks,

--
Wonil