The MMIO functions shown in the following table allow you to manage an I/O buffer.

┌──────────────────┬─────────────────────────────────────────────┐
│Function          │Description                                  │
├──────────────────┼─────────────────────────────────────────────┤
│mmioFlush         │Forces the contents of an I/O buffer to be   │
│                  │written to disk.                             │
├──────────────────┼─────────────────────────────────────────────┤
│mmioSetBuffer     │Enables or disables buffered I/O, and changes│
│                  │the buffer or buffer size for an open file.  │
└──────────────────┴─────────────────────────────────────────────┘