The concept of being able to use any font type and know that your user will see the help system as you intended (instead of hoping your font-family triggers an installed font). Based on a quick review of the legal side of using the Open Source font, just throwing in a trademark statement about the font being a copyright of blah blah will suffice, even if the application that uses the help system / font is sold.
Legal Details of Using the Fonts: http://scripts.sil.org/cms/scripts/page ... id=OFL_web
I am probably going to mess with trying to implement the font into a help system to see how it all pans out, but, looking at the code that Google supplied it doesn't seem that difficult. Add a CSS link the head (so, throw it in the masterpage) then refer to the new font in your font-family.
Examples from Google:
1. Add a stylesheet link to request the desired web font(s):
Code: Select all
<link rel="stylesheet" type="text/css" href="http://fonts.googleapis.com/css?family=Font+Name">2. Style an element with the requested web font, in a stylesheet:
Code: Select all
CSS selector {
font-family: 'Font Name', serif;
}