Yes.
We support a number of institutions. If a visually impaired student wants the materials, we provide them through our repository, centrally managed. Certainly a lot of our digital products—there are very few of them in use today—have audio components for the hearing impaired, for example, or for the sight impaired. They can actually hear the audio books built right into our digital text.
It's a very small usage, but we've done a number of things to respond. We've worked with a number of other agencies. I think the educational publishing community has done a very good job supporting the visually and hearing impaired.