Revise the following sentences so that their parts are balanced.
1. Our telecommunications software allows you to meet with customers over the Internet for training, Web-based meet- ings can be held, and other online collaboration within virtual teams is also facilitated.
2. We need more trained staff members, office space is limited, and the budget for overtime is too small.
3. The application for a grant asks for this information: funds required for employee salaries, how much we expect to spend on equipment and what is the length of the project.
4. Sending an e-mail or letter establishes a more permanent record than to make a telephone call.