Spare Area Usage

Here you can specify of how to use the Spare Area. Clicking the Spare Area Usage menu line opens the pop-up dialog:

Do Not Use	This default option means: "in no case do not use Spare Area for storing user's data". Choosing this default option prevents overwriting invalid block markers in the Spare Area by the user's data. After erasing the device Flash memory markers of the invalid blocks will be restored in the Spare Area.
User Data	The Spare Area can be used for storing the user's data; the invalid block markers written into the Spare Area will not be protected against overwriting by user's data. If this option is chosen the programmer writes the data from its buffer into the major device memory and when this memory is completely full the programmer begins writing into the Spare Area. The programmer buffer displays merged memory pages, including the Spare Area.
User Data with IB Info Forced	The Spare Area can be used for storing the user's data but the invalid block markers written into the Spare Area will be protected against overwriting by user's data. Even if the programmer had overwritten the invalid block markers in the Spare Area it will restore these markers after completion of the programming operation.