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## Selection commands

There are no commands for selecting symbol fonts. Instead, these are selected indirectly through symbol commands like `\oplus`. Section 3.6 explains how to define symbol commands.

`\mathnormal{<math>}`
`\mathcal{<math>}`
`\mathrm{<math>}`
`\mathbf{<math>}`
`\mathsf{<math>}`
`\mathit{<math>}`
`\mathtt{<math>}`

Each math alphabet is a command which can only be used inside math mode. For example, `$x + \mathsf{y} + \mathcal{Z}$` produces .

`\mathversion{<version>}`

This command selects a math version; it can only be used outside math mode. For example, `\boldmath` is defined to be `\mathversion{bold}`.