If MCI_FROM is not specified, the starting position defaults to the current location.

If MCI_TO is not specified, the record continues until a pause or stop message is received.

MCI_RECORD_INSERT is the default for devices that support insert. MCI_RECORD_OVERWRITE is the default for devices that do not support insert.

Waveaudio Specific

Although insert is supported by the waveaudio device, the default is overwrite for recording operations.