| blankline | Display a blank line after each n observations |
| double | Double space proc print output. |
| heading | Control the orientation of the column headings:
horizontal or vertical. |
| label | Uses the variable's label as the column heading instead
of the variable name. |
| n | Display number of observations in the data set and/or in by groups. |
| noobs | Suppress the column that identifies the row by
observation number. |
| obs | Supply a column header for the column that identifies the
row. |
| sumlabel | Display the by variable label on the summary line. |