...
The Depreciable Cost (Acct. Curr.) subcolumn is populated by default with the gross cost minus salvage value of the asset. The Accumulated Depreciation subcolumn shows the sum of depreciation amounts calculated over previous periods, since the start of depreciation.
The Current Depreciation column is populated with the standard monthly depreciation amount calculated for this asset in the accounting currency.
The Net Book Value (Acct. Curr.) column shows the current cost of the fixed asset, that is, the gross cost minus the accumulated depreciation amount.
...