Help with grid linewidth

[Rik]

Could someone test the following in Matlab?

plot (1:10)
grid on
set (gca, 'linewidth', 6)

The axes lines should be large (= 6).  Do the grid lines also become large
or do they stay at ~1 pt?

What happens if you add

grid minor

Are the minor grid lines the same linewidth as the major ones?

Thanks,
Rik