What paper types can be used in the multi-purpose tray but NOT in the standard cassette?

The multi-purpose tray supports heavy paper (121–149 g/m2 Heavy 2, and 150–163 g/m2 Heavy 3), label paper, and envelopes (Envelope 1 and Envelope 2), none of which are supported by the standard cassette. Additionally, index cards (3x5 inch) can only be fed from the multi-purpose tray. The standard cassette is limited to plain, thin, recycled, color, lighter heavy, and bond paper types. (Page 10)