. . "Topic is the subject matter about which the Message is communicated. It is normally expressed as a PP-complement headed by about, with or without a quantificational noun: The students heard about class.The students heard something about today's class. The quantificational noun, if present, is treated as the Message. "^^ . . . . . . . . . . "Topic"^^ . . . "Core"^^ . . . . . . . . . .