# CloseMathFolio

Closes the math folio and resets the mathbase global variable to zero.

### Synopsis

`Err CloseMathFolio(void)`

### Description

CloseMathFolio attempts to close the math folio structure. If successful, it also sets _Mathfolio to zero and returns zero. On failure a negative error is returned.

### Implementation

Convenience call implemented in operamath.lib V22.

### See Also

``OpenMathFolio`()`