A dagger (
) next to a register name indicates that the register can
be set only from the command line or before the mm macro
definitions are read by the formatter. Any register having a
single-character name can be set from the command line with the
-r option.
A![]() | If set to 1, omit technical memorandum headings and provide spaces appropriate for letterhead (see .AF macro). |
| Au | Omit author information on first page (see .AU macro). |
C![]() | Flag indicating type of copy (original, draft, etc.). |
| Cl | Level of headings saved for table of contents (see .TC macro). Default is 2. |
| Cp | If set to 1 (default), list of figures and tables appear on same page as table of contents. Otherwise, they start on a new page. |
D![]() | If set to 1, use debug mode ( |
| De | If set to 1, eject page after each floating display. Default is 0. |
| Df | Set format of floating displays (see .DF macro). |
| Ds | Set space used before and after static displays. |
E![]() | Font for Subject/Date/From. 0 (bold, the default) or 1 (roman). |
| Ec | Equation counter, incremented for each .EC macro. |
| Ej | Heading level for page eject before headings. Default is 0 and no eject. |
| Eq | If set to 1, place equation label at left margin. Default is 0. |
| Ex | Exhibit counter, incremented for each .EX macro. |
| Fg | Figure counter, incremented for each .FG macro. |
| Fs | Vertical spacing between footnotes. |
Hn | Heading counter for level |
| Hb | Level of heading for which break occurs before output of body text. Default is 2. |
| Hc | Level of heading for which centering occurs. Default is 0. |
| Hi | Type of indent after heading. Values are 0 (left-justified), 1 (indented, the default), 2 (indented except after .H, .LC, .DE). |
| Hs | Level of heading for which space after heading occurs. Default is 2. |
| Ht | Numbering type of heading: 1 (single) or 0 (concatenated, the default). |
| Hu | Set level of heading at which unnumbered headings occur. Default is 2. |
| Hy | If set to 1, enable hyphenation. Default is 0. |
L![]() | Set length of page. Default is 66v. |
| Le | Flag to print list of equations after table of contents: 0 (don't print, the default) or 1 (print). |
| Lf | Like Le, but for list of figures. |
| Li | Default indent of lists. Default is 5. |
| Ls | Set spacing between items in nested lists. Default is 6 (spacing between all levels of list). |
| Lt | Like Le, but for list of tables. |
| Lx | Like Le, but for list of exhibits. |
N![]() | Set page numbering style:
|
| Np | Set numbering style for paragraphs: 0 (unnumbered) or 1 (numbered). |
| O | Offset of page. For nroff, value is unscaled number representing character positions; default is 9 (7.5i). For troff, value is scaled; default is .5i. |
| Oc | Set numbering style for pages in table of contents: 0 (lowercase roman, the default) or 1 (arabic). |
| Of | Set separator for figure number in captions. 0 (use period, the default); 1 (use hyphen). |
| P | Current page number. |
| Pi | Amount of indent for paragraph. Default is 5 for nroff and 3 for troff. |
| Ps | Amount of spacing between paragraphs. Default is 3v. |
| Pt | Paragraph type. Values are 0 (left-justified, the default), 1 (indented), 2 (indented except after .H, .LC, .DE). |
| Pv | Suppress ``PRIVATE" header. |
| Rf | Reference counter, incremented for each .RS. |
S![]() | Default point size for troff. Default is 10. Vertical spacing is \nS+2. |
| Si | Standard indent for displays. Default is 5 for nroff and 3 for troff. |
T![]() | Type of nroff output device. Sets registers for specific devices. |
| Tb | Table counter, incremented for each .TB. |
U![]() | Style of nroff underlining for .H and .HU. If not set, use continuous underline; if set, don't underline punctuation and white space. Default is 0. |
W![]() | Width of page (line and title length). Default is 6i. |