However, the default grid_style == #3 has not been improved.
Being aware that better styles are available, this makes me setting by
hand the grid_style almost every time that i need it. Somewhat boring...
I propose to change the default style to one of the new values #7 to #9.
The full rational for this proposal is posted as bug
http://bugzilla.scilab.org/15421 where a piece of code is available, to test and compare.