OW : Fixed Assets Depreciation

[jdewow]

Hi.

I am just beginning with Fixed Assets on OW. The Manual mentions about
Secondary Depreciation and Tertiary Depreciation. I have not been able to
find any explanations on these in the Manual..like what are these
depreciation amounts,how would they be calculated & what is the precise role
of these calculations. Further,I feel from the AAIs that Accumalated
Depreciation has an account only for Secondary Depreciation but not Tertiary
whereas Depreciation Expense has an account for both.

Can somebody please explain ?

Thanks in advance.

Regards.