In mixed columns made up of figure and reading-matter items, do. is used only under the latter items.
Do. is not used—
- (1) In a figure or symbol column (tracing columns are figure columns);
- (2) In the first line under a centerhead in the column in which the centerhead occurs;
- (3) Under a line of leaders or a rule;
- (4) Under an item italicized or set in boldface type for a specific reason (italic or boldface do. is never used; item is repeated);
- (5) Under an abbreviated unit of quantity or other abbreviations; or
- (6) Under words of three letters or less.
Do. is used, however, under a clear space and under the word None in a reading column.
Do. does not apply to a reference mark on the preceding item. The reference mark, if needed, is added to do.
Leaders are not used before Do. in the first column or before or after Do. in the last column.
In a first and/or last column 6 ems or less in width, a 1-em space is used before Do. In all other columns 6 ems or less in width, six periods are used. Bearoff is not included.
In a first and/or last column more than 6 ems in width, 2 ems of space are used before Do. In all other columns more than 6 ems in width, six periods are used. Bearoff space is not included. If the preceding line is indented, the indention of Do. is increased accordingly.
Do. under an indented item in an inside reading column, with or without matter in preceding column, is preceded by six periods which are indented to align with item above.
