[R] Subtitle & conova post hoc

[Simon.Gingins at unil.ch]

Hello,

I just have two questions I cannot figure out.

1) I would like to have a subtitle just below the main title
on my graphs and I cannot figure out how to do this, is it
possible? or is it only possible to have it at the bottom?

2) I need to run Conova post hoc test, do you know if it is
coded in R? any package I would find this test in?

Thank you very much for all the help

Have a nice sunday

Simon