The checkpoint section controls how often the active GBUdb dataset is saved to a .gbx file. When the SNFMulti engine is started it will load the latest .gbx file so that GBUdb will remember where it left off.

<checkpoint on-off='on' secs='3600'/>

The on-off='on' attribute enables and the on-off='off' attribute disables this feature.

The secs='3600' attribute establishes that a checkpoint will occur every hour (3600 seconds).

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