On this tab, you can view the depreciation status of list the fixed assetassets for writeoff.

The "Fixed Asset Write Off (create)" form. The Fixed Assets tab

...

The Current Depreciation Amount (Acct. Cur.) column shows the depreciation amount calculated for the current month in the accounting currency. Click the Calculate button to calculate the current-month depreciation expense. 

The Net Book Value (Acct. Cur.) column shows the difference between the initial cost and accumulated depreciation for the asset.

...

The Fixed Assets tab toolbar buttons

The Calculate button can be used to refill the data for the listed fixed assets if the data was changed by other documents.