Changing font in a two line figure title

Question

I want to write my figure title in two lines in a way that I can change the text properties of both lines separately. I found:

title(['\bf{first line}' char(10) '\rm{second line}'])

which makes the first line bold. But how can I change the font size for first line?

Answer 1

 title(['\fontsize{20pt}\bf{first line}' char(10) '\fontsize{10pt}\rm{second line}'])

I found this syntax hidden in the docs: http://www.mathworks.com/help/matlab/creating_plots/adding-text-annotations-to-graphs.html#f0-19466 And then fiddled it bit.