26. Explain the use of special characters on the billing machine, and what is meant by aligning them in order to prevent one abbreviation being printed over the top of another.
27. Explain the difference between a single-stop tabulator and a decimal-stop tabulator.
28. What is the advantage of having a billing operator on a platform on wheels in a wholesale dry goods house?
29. Under what conditions would you recommend the use of the separate billing machine and separate computing machine for the same work?
30. Explain the benefits to be derived from the use of the color scheme.
31. What is meant by compound forms, and under what conditions can they be used?
32. In what general way does retail dry goods billing differ from condensed billing and what is the difference in the general style of stationery used?
33. What is the best plan of filing the duplicate monthly retail dry goods bill?
34. What is the plan used in retail dry goods billing to prevent goods from being shipped out of the store without a charge being made?
35. What is the advantage of a subtracting device on the billing machine with adding attachment?