the name of the macro being described, and look(1).
ok jmc
-.\" $OpenBSD: eqn.7,v 1.4 2014/10/12 11:57:19 schwarze Exp $
+.\" $OpenBSD: eqn.7,v 1.5 2015/01/20 18:54:33 tedu Exp $
.\"
.\" Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
.\" Copyright (c) 2014 Ingo Schwarze <schwarze@openbsd.org>
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
-.Dd $Mdocdate: October 12 2014 $
+.Dd $Mdocdate: January 20 2015 $
.Dt EQN 7
.Os
.Sh NAME
upsilon, xi, zeta, DELTA, GAMMA, LAMBDA, OMEGA, PHI, PI, PSI, SIGMA,
THETA, UPSILON, XI, inter (intersection), union (union), prod (product),
int (integral), sum (summation), grad (gradient), del (vector
-differential), times (multiply), cdot (centre-dot), nothing (zero-width
+differential), times (multiply), cdot (center-dot), nothing (zero-width
space), approx (approximately equals), prime (prime), half (one-half),
partial (partial differential), inf (infinity), >> (much greater), <<
(much less), \-> (left arrow), <\- (right arrow), +\- (plus-minus), !=
-.\" $OpenBSD: mandoc_char.7,v 1.22 2014/12/16 19:48:49 schwarze Exp $
+.\" $OpenBSD: mandoc_char.7,v 1.23 2015/01/20 18:54:33 tedu Exp $
.\"
.\" Copyright (c) 2003 Jason McIntyre <jmc@openbsd.org>
.\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
-.Dd $Mdocdate: December 16 2014 $
+.Dd $Mdocdate: January 20 2015 $
.Dt MANDOC_CHAR 7
.Os
.Sh NAME
.It \e(-+ Ta \(-+ Ta minus-plus
.It \e(+- Ta \(+- Ta plus-minus
.It \e[t+-] Ta \[t+-] Ta plus-minus (text)
-.It \e(pc Ta \(pc Ta centre-dot
+.It \e(pc Ta \(pc Ta center-dot
.It \e(mu Ta \(mu Ta multiply
.It \e[tmu] Ta \[tmu] Ta multiply (text)
.It \e(c* Ta \(c* Ta circle-multiply
-.\" $OpenBSD: mdoc.7,v 1.129 2015/01/03 00:56:54 schwarze Exp $
+.\" $OpenBSD: mdoc.7,v 1.130 2015/01/20 18:54:33 tedu Exp $
.\"
.\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
.\" Copyright (c) 2010, 2011, 2013 Ingo Schwarze <schwarze@openbsd.org>
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
-.Dd $Mdocdate: January 3 2015 $
+.Dd $Mdocdate: January 20 2015 $
.Dt MDOC 7
.Os
.Sh NAME
must be one of the following:
.Bl -tag -width 13n -offset indent
.It Fl centered
-Produce one output line from each input line, and centre-justify each line.
+Produce one output line from each input line, and center-justify each line.
Using this display type is not recommended; many
.Nm
implementations render it poorly.
.Cm right ,
which justifies to the right margin; or
.Cm center ,
-which aligns around an imagined centre axis.
+which aligns around an imagined center axis.
.It
A macro invocation, which selects a predefined width
associated with that macro.
.Fl offset Cm center
and
.Fl offset Cm right .
-Groff does not implement centred and flush-right rendering either,
+Groff does not implement centered and flush-right rendering either,
but produces large indentations.
.El
.Sh SEE ALSO
-.\" $OpenBSD: roff.7,v 1.40 2014/12/25 17:18:40 schwarze Exp $
+.\" $OpenBSD: roff.7,v 1.41 2015/01/20 18:54:33 tedu Exp $
.\"
.\" Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
.\" Copyright (c) 2010, 2011, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
-.Dd $Mdocdate: December 25 2014 $
+.Dd $Mdocdate: January 20 2015 $
.Dt ROFF 7
.Os
.Sh NAME
.Ss \&ad
Set line adjustment mode.
This line-scoped request is intended to have one argument to select
-normal, left, right, or centre adjustment for subsequent text.
+normal, left, right, or center adjustment for subsequent text.
Currently, it is ignored including its arguments,
and the number of arguments is not checked.
.Ss \&am
-.\" $OpenBSD: tbl.7,v 1.8 2014/11/25 06:39:20 bentley Exp $
+.\" $OpenBSD: tbl.7,v 1.9 2015/01/20 18:54:33 tedu Exp $
.\"
.\" Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
.\" Copyright (c) 2014 Ingo Schwarze <schwarze@openbsd.org>
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
-.Dd $Mdocdate: November 25 2014 $
+.Dd $Mdocdate: January 20 2015 $
.Dt TBL 7
.Os
.Sh NAME
Tables consist of a series of options on a single line, followed by the
table layout, followed by data.
.Pp
-For example, the following creates a boxed table with digits centred in
+For example, the following creates a boxed table with digits centered in
the cells.
.Bd -literal -offset indent
\&.TS
are ignored by
.Xr mandoc 1 .
.Pp
-For example, the following layout specifies a centre-justified column of
+For example, the following layout specifies a center-justified column of
minimum width 10, followed by vertical bar, followed by a left-justified
column of minimum width 10, another vertical bar, then a column using
bold font justified about the decimal point in numbers: