You can block all accounts of the same type and then run ATYPE and press enter on the appropriate account type.
Accounts that have not been ATYPE’d come in to NV2 as type General.
If you have many reports that are profit and loss reports that total to a consolidated Profit and Loss report, you can go to the consolidated P&L and block all Revenue accounts and then issue /Go runProc (/GR) TATYPE which is the equivalent to ATYPE but it works on total accounts. Repeat this for expense accounts.
The original structure will come into NV2 if the accounts have not been ATYPE’d (under Reports). It is important to ATYPE the accounts properly to show the proper Sales, Expense, Receivable, Payable, Cost of Goods Sold, Employee, General accounts.