How to change font size in the help of Comsol?

Hi,

I am using Comsol Livelink for Matlab and I open the Comsol help from Matlab (using 'mphdoc' command).
The help browser that I open looks exactly like the help browser of Matlab and even give as 'reference' options the option to change Matlab settings.
My problem is that the font on this help browser is too small for me.
I tried whatever I can to change font size and manage to do it in all other parts of Matlab - including Matlab's own help browser. Alas, I didn't find a way to change font size in the Comsol help.

Can anyone help?

Thanks,
Alon