Nested arrays

[Karl-Filip Faxen]

Hi all!

I've used LaTeX before and just started using LyX. Now I have trouble 
making arrays inside arrays; if I have the cursor in an array cell and 
hit the matrix button in math panel, I get "command disabled" and the 
array item in the "Insert->Math" menu is greyed out.

I have figured out a workaround, though, which is to create the inner 
matrix somewhere else and then pasting it into the enclosing cell, but 
that procedure is not exactly convenient. Is there a saner way?

Cheers,

    /kff