===================================================================
RCS file: /cvs/mandoc/roff.7,v
retrieving revision 1.55
retrieving revision 1.62
diff -u -p -r1.55 -r1.62
--- mandoc/roff.7	2014/07/07 11:35:06	1.55
+++ mandoc/roff.7	2015/01/20 19:39:34	1.62
@@ -1,4 +1,4 @@
-.\"	$Id: roff.7,v 1.55 2014/07/07 11:35:06 schwarze Exp $
+.\"	$Id: roff.7,v 1.62 2015/01/20 19:39:34 schwarze Exp $
 .\"
 .\" Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
 .\" Copyright (c) 2010, 2011, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
@@ -15,7 +15,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: July 7 2014 $
+.Dd $Mdocdate: January 20 2015 $
 .Dt ROFF 7
 .Os
 .Sh NAME
@@ -239,8 +239,9 @@ pica (~1/6 inch)
 .It p
 point (~1/72 inch)
 .It f
-synonym for
+scale
 .Sq u
+by 65536
 .It v
 default vertical span
 .It m
@@ -254,7 +255,7 @@ width of rendered
 .Pq en
 character
 .It u
-default horizontal span
+default horizontal span for the terminal
 .It M
 mini-em (~1/100 em)
 .El
@@ -262,7 +263,6 @@ mini-em (~1/100 em)
 Using anything other than
 .Sq m ,
 .Sq n ,
-.Sq u ,
 or
 .Sq v
 is necessarily non-portable across output media.
@@ -402,7 +402,7 @@ language defines many more requests not implemented in
 .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
@@ -543,8 +543,10 @@ one explicit newline character.
 In order to prevent endless recursion, both groff and
 .Xr mandoc 1
 limit the stack depth for expanding macros and strings
-to a large, but finite number.
-Do not rely on the exact value of this limit.
+to a large, but finite number, and
+.Xr mandoc 1
+also limits the length of the expanded input line.
+Do not rely on the exact values of these limits.
 .Ss \&dei
 Define a
 .Nm
@@ -747,16 +749,18 @@ If the first character of COND is
 .Pq even page ,
 .Sq r
 .Pq register accessed ,
-or
 .Sq t
 .Pq troff mode ,
+or
+.Sq v
+.Pq vroff mode ,
 COND evaluates to false.
 .It
 If COND starts with a parenthesis or with an optionally signed
 integer number, it is evaluated according to the rules of
 .Sx Numerical expressions
 explained below.
-It evaluates to true if the the result is positive,
+It evaluates to true if the result is positive,
 or to false if the result is zero or negative.
 .It
 Otherwise, the first character of COND is regarded as a delimiter
@@ -935,6 +939,11 @@ Turn on no-space mode.
 This line-scoped request is intended to take no arguments.
 Currently, it is ignored including its arguments,
 and the number of arguments is not checked.
+.Ss \&pl
+Change page length.
+This line-scoped request is intended to take one height argument.
+Currently, it is ignored including its arguments,
+and the number of arguments is not checked.
 .Ss \&ps
 Change point size.
 This line-scoped request is intended to take one numerical argument.
@@ -1189,8 +1198,10 @@ Bracket building function; ignored by
 .Sx Special Characters
 with names of arbitrary length.
 .Ss \ec
-Interrupt text processing to insert requests or macros; ignored by
-.Xr mandoc 1 .
+When encountered at the end of an input text line,
+the next input text line is considered to continue that line,
+even if there are request or macro lines in between.
+No whitespace is inserted.
 .Ss \eD\(aq Ns Ar string Ns \(aq
 Draw graphics function; ignored by
 .Xr mandoc 1 .
@@ -1347,6 +1358,12 @@ The term
 refers to groff version 1.15.
 .Pp
 .Bl -dash -compact
+.It
+The
+.Sq u
+scaling unit is the default terminal unit.
+In traditional troff systems, this unit would change depending on the
+output media.
 .It
 In mandoc, the
 .Sx \&EQ ,