by Trent A. Fisher and Werner Lemberg - The GNU Operating System

36 The GNU Troff Manual
1 Print the number followed by a period (like 1.) and indent
the footnote.
2 Like 1, without an indentation.
3 Like 1, but print the footnote number as a hanging paragraph.
Effective: next footnote.
Default: 0.
\n[FPS]
[Register]
Defines the footnote point size. If the value is larger than or equal to
1000, divide it by 1000 to get a fractional point size.
Effective: next footnote.
Default: \n[PS] − 2.
\n[FVS]
[Register]
Defines the footnote vertical spacing. If the value is larger than or equal
to 1000, divide it by 1000 to get a fractional point size.
Effective: next footnote.
Default: \n[FPS] + 2.
\n[FPD]
Defines the footnote paragraph spacing.
Effective: next footnote.
Default: \n[PD]/2.
Miscellaneous Number Registers
[Register]
\n[MINGW]
[Register]
Defines the minimum width between columns in a multi-column document.
Effective: next page.
Default: 2 n.
\n[DD]
[Register]
Sets the vertical spacing before and after a display, a tbl table, an eqn
equation, or a pic image.
Effective: next paragraph.
Default: 0.5 v.
4.3.4 Cover page macros
Use the following macros to create a cover page for your document in the
order shown.