-.\" $Id: mandoc.1,v 1.158 2015/03/30 16:06:14 schwarze Exp $
+.\" $Id: mandoc.1,v 1.164 2015/11/05 17:47:51 schwarze Exp $
.\"
.\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
.\" Copyright (c) 2012, 2014, 2015 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: March 30 2015 $
+.Dd $Mdocdate: November 5 2015 $
.Dt MANDOC 1
.Os
.Sh NAME
.Sx PostScript Output .
.It Fl T Cm tree
Produce an indented parse tree.
+See
+.Sx Syntax tree output .
.It Fl T Cm utf8
Encode output in the UTF\-8 multi-byte format.
See
blocks use MathML.
.Pp
The
-.Pa example.style.css
+.Pa mandoc.css
file documents style-sheet classes available for customising output.
If a style-sheet is not specified with
.Fl O Cm style ,
See
.Sx Locale Output
for details and options.
+.Ss Syntax tree output
+Use
+.Fl T Cm tree
+to show a human readable representation of the syntax tree.
+It is useful for debugging the source code of manual pages.
+The exact format is subject to change, so don't write parsers for it.
+Each output line shows one syntax tree node.
+Child nodes are indented with respect to their parent node.
+The columns are:
+.Pp
+.Bl -enum -compact
+.It
+For macro nodes, the macro name; for text and
+.Xr tbl 7
+nodes, the content.
+There is a special format for
+.Xr eqn 7
+nodes.
+.It
+Node type (text, elem, block, head, body, body-end, tail, tbl, eqn).
+.It
+Flags:
+.Bl -dash -compact
+.It
+An opening parenthesis if the node is an opening delimiter.
+.It
+An asterisk if the node starts a new input line.
+.It
+The input line number (starting at one).
+.It
+A colon.
+.It
+The input column number (starting at one).
+.It
+A closing parenthesis if the node is a closing delimiter.
+.It
+A full stop if the node ends a sentence.
+.El
+.El
.Sh ENVIRONMENT
.Bl -tag -width MANPAGER
.It Ev MANPAGER
.Ev MANPAGER
is not defined.
If neither PAGER nor MANPAGER is defined,
-.Pa /usr/bin/more Fl s
+.Xr more 1
+.Fl s
will be used.
.El
.Sh EXIT STATUS
.Dl $ mandoc mandoc.1 mdoc.3 mdoc.7 | less
.Pp
To produce HTML manuals with
-.Ar style.css
+.Pa mandoc.css
as the style-sheet:
.Pp
-.Dl $ mandoc \-T html -O style=style.css mdoc.7 \*(Gt mdoc.7.html
+.Dl $ mandoc \-T html -O style=mandoc.css mdoc.7 \*(Gt mdoc.7.html
.Pp
To check over a large set of manuals:
.Pp
.Ic \&It
macro.
The offending children are moved before the beginning of the list.
-.It Sy ".Vt block has child macro"
-.Pq mdoc
-The
-.Ic \&Vt
-macro supports plain text arguments only.
-Formatting may be ugly and semantic searching
-for the affected content might not work.
.It Sy "fill mode already enabled, skipping"
.Pq man
A
might otherwise trick a privileged user into inadvertently displaying
the file on the screen, revealing the file content to bystanders.
The argument is ignored including the file name following it.
+.It Sy "skipping display without arguments"
+.Pq mdoc
+A
+.Ic \&Bd
+block macro does not have any arguments.
+The block is discarded, and the block content is displayed in
+whatever mode was active before the block.
.It Sy "missing list type, using -item"
.Pq mdoc
A