<\body> The contains the default theorem-like and other textual environments, which are available through . They are subdivided into three main categories: <\description> The bodies of theorem-like environments are usually emphasized. By default, the following such environments are available via : , , , , , , , . The following ones are available via : , , , , . Two such environments are provided by default and available via : and . The environments are all available in unnumbered versions , , as well. You may use in order to switch between the unnumbered and numbered version. The following tags are also provided: <\explain|> For proofs of theorems. <\explain|> An environment which can be used to specify the inventors of a theorem. It should be used at the start inside the body of a theorem, like in <\theorem*> +b=c>. <\initial> <\collection>