Hello,

Can I draw vertical and horizontal lines inside a matrix?

I get ugly result by underlining and "sidelining" the elements, but what 
I neeed is to underline the whole row and draw a line next to the whole 
column.

\startformula T = \left[ {\matrix{

a & b & {c |} & p \cr

d & e & {f |} & q \cr

{\underline h } & {\underline i } & {\underline j |} & r \cr

l & m & {n |} & s \cr

} } \right].\stopformula


The attached picture shows how it looks now.

Vyatcheslav