Casio ALGEBRA FX 2.0 PLUS Manual page 22

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MEMORY Mode
k Optimizing the Storage Area
Storage area memory can become fragmented after many store and load operations.
Fragmentation can cause blocks of memory to become unavailable for data storage.
Because of this, you should periodically perform the storage area optimization procedure,
which rearranges the data in the storage area and makes memory usage more economical.
u To optimize the storage area
On the initial MEMORY Mode screen press 3(OPT) to start storage area optimization.
The message "Complete!" appears when the optimize operation is complete.
Press i to return to the initial MEMORY Mode screen.
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