[synchronise]
seq_num=21
This is used by emplode, during synchronisation.
When you connect emplode to your empeg, it downloads a copy of the database, on which the changes are made. These changes are then sent back to the player when you press synchronise.
Because you can unplug your empeg without interrupting your session in emplode, and then reconnect it later (perhaps you want to go out in the car, and come back later to finish your tagging), we need to ensure that the database on the player and the database held by emplode don't get out of sync.
That's what the sequence number does.
When you connect to the player, emplode remembers the sequence number. When you synchronise to the player, emplode increments the sequence number and writes it back.
Before starting the synchronise, it checks that the sequence number currently on the player is the same as the one that was there when we started. If it's not, then you've probably changed the database in another copy of emplode. In this case, emplode will complain, and will not let you save your changes, in case they result in database corruption.
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roger