听力原文：I'm afraid there's no way we can allow you to use any part of any of our client projects in your portfolio, I'm sorry. Having said that, I do recognize that having samples to provide as part of a portfolio is important, so if you can do it while protecting our client's confidentiality, I'm willing to be a little flexible. One thing I've suggested to others in the past is to mock up something that is similar to the client's materials, but that strips out proprietary content and logos. In addition to stripping out proprietary content and logos, the other thing you need to do is to not distribute your portfolio electronically, for example, on web sites, or through e-mail, etc. I would limit the portfolio to one-on-one distribution, preferably by regular mail, to industry folks who are interested in working with you. What is the speaker mainly discussing?