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# Function Reference

You can easily create very complex expressions by using the available functions. This function reference provides detailed information about each function. Function arguments in square brackets are optional. However, if you give a value to an optional argument, you must also give a value to every optional argument before that one.

#### Topics in this section

- Animation Functions
- Slip Functions
- Simple Mathematical Functions
- Random Number Functions
- Rounding Functions
- Trigonometric Functions
- Vector Functions
- Logarithmic Functions