Renaming a directory in MS-DOS is much like renaming a file use the ren or rename command to rename the directory. Because you cannot have a file and directory that have the same name you will not need to worry about mistakenly renaming a file instead of a directory, unless you're using wild characters.
Normal balance is the accounting classification of an account. It is part of double-entry book-keeping technique. An account has either credit (Abbrev. CR) or debit (Abbrev.
Each account has a normal balance that is either a debit or credit. The normal balance is the side that increases the account. The normal balance for assets is debit, liabilities is credit and equity is credit. The normal balance for expenses is debit, revenues is credit and draws is debit.