.TH GROFF_PRESENT 7 "September 4, 2002"
.SH NAME
groff_present \- groff presentation macros
.SH SYNOPSIS
groff \-mm \-m\fBpresent\fP [\|\fIoptions\fP ...\|] [\|\fIfiles\fP ...\|]
.SH DESCRIPTION
The presentation macros are based upon the groff mm macros.
They are useful for making presentations with the use of a beamer,
but without use of the
.B PAUSE
macro, they can also be used for making slides.
.P
The post-processor
.BR presentps (1)
is needed for manipulation of the PostScript output of
.BR groff (1)
in order to make it a presentation.
.SH USAGE
A presentation can be made with the following commands.
.RS
% groff -mm -mpresent file.rof > file.pps
.br
% presentps -l < file.pps > file.ps
.br
% ps2pdf file.ps
.br
% acroread file.pdf
.br
.RE
.P
Slides can be made with the following command.
.RS
% groff -P-l -mm -mpresent file.rof > file.ps
.RE
.SS Macros
.TP
.BI ADDCONTENT " string"
Adds
.I string
to the contents which can be made with the macro
.BR END .
.TP
.BI BACKGROUND " args"
Defines the background to be used.
This macro should be invoked before the page is started.
A description of
.I args
is given below.
.br
Default: None
.RS
.TP
.BI Solid " color"
Makes a solid background.
.TP
.BI GradX " color1 color2"
Makes a gradient background in the x-direction from
.I color1
to
.IR color2 .
.TP
.BI GradY " color1 color2"
Makes a gradient background in the y-direction from
.I color1
to
.IR color2 .
.TP
.BI GradAngle " color1 color2 steps angle"
Makes a gradient background in a direction with an angle from
.I color1
to
.IR color2 .
.TP
.B None
No background is made.
.RE
.TP
.BI BLOCKS " \fR[once] [\fPx \fR[\fPy \fR[\fPlength\fR]\fP"
A block is started with the upper right corner at
.IR x , y .
By omission of y and/or x the current coordinates are used.
If
.I length
is given, the line length is set to this.
If the first option is
.B once
this block only appears once, so after a
.B PAUSE
this block does not show up anymore.
.TP
.B BLOCKE
Ends a block.
The position is reset to the position before the block was started.
.TP
.BI COLOR " color \fR[\fParg1 \fR[\fParg2\fR]]\fP"
Sets the foreground color.
.I color
must be the name of a predefined color or a color defined
with the macro
.BR DEFCOLOR .
If
.I color
is P, the foreground color is set to the previous color.
If
.I arg1
is given then only this is printed in the specified color.
If
.I arg2
is given, this is put directly after
.I arg1
in the current color.
.br
Default: black
(DEFCOLOR is mapped onto the groff request .defcolor.)
.TP
.BI DEFAULTCOLOR " color
Sets the default color for headers, footers, and text.
Use this macro after defining 
.BR HEADER .
.br
Default: black
.TP
.BI DEFCOLOR " name red green blue"
Defines a color
.I name
with the values for red, green, and blue represented by the other
arguments.
These values must be between 0 and 1.
.br
See also subsection
.BR "Predefined colors" .
.TP
.BI DESTINATION " name"
Defines a destination
.I name
to which a link can be made.
.TP
.B END
Generates a contents page build up from the titles specified
with the macro
.B TITLE
and additional text specified by the macro
.BR ADDCONTENT .
.TP
.BI FILL " x1 y1 x2 y2 args"
Since the routines are there anyway for making the backgrounds,
we might as well use them for filling rectangles.
For a description of
.I args
see macro
.BR BACKGROUND .
.TP
.B FOOTER
If this macro is defined it is called at the bottom of the page.
.TP
.BI FOOTERSIZE " n"
Sets the size of the footer to
.IR n v.
For technical reasons the minimum is 2.
.br
Default: 3
.TP
.B HEADER
If this macro is defined it is called at the top of the page.
.TP
.BI INITCOLOR " color
Sets the color for text. Should be used at the start of the presentation
instead of
.BI COLOR .
.br
Default: black
.TP
.BI LINK " name string"
Makes a link from
.I string
to the destination
.IR name .
.TP
.BI LINKCOLOR " color \fR[\fPborder-width \fR[\fPborder-color\fR]]\fP"
Sets the foreground color for the text of a link.
Optionally the width and the color of the border for the link can
also be set.
.br
Default: blue7 0 black
.TP
.BI MARGIN " left \fR[\fPright\fR]\fP"
Sets the left and right margins.
If
.I right
is not given, it is set equal to the left margin.
.br
Default: 0.75i
.TP
.B PAUSE
Pauses the presentation at this point.
.TP
.BI SUBTITLE " string"
Makes a subtitle in a way that can be specified with
.B SUBTITLEFORMAT
in a big font (smaller than with
.BR TITLE )
in a color that can be specified with the macro
.BR SUBTITLECOLOR .
.TP
.BI SUBTITLECOLOR " name"
Sets the color of subtitles to
.IR name .
.br
Default: blue4
.TP
.B SUBTITLEFORMAT L \fR|\fP C \fR|\fP R \fR|\fP I \fR[\fP\fIn\fP\fR]\fP
Sets the format for subtitles.
.br
Default: I
.RS
.TP
.B L
left adjusted
.TP
.B C
centered
.TP
.B R
right adjusted
.TP
.BI I " \fR[\fPn\fR]\fP
indented with indentation
.I n
if given (default 0.5i)
.RE
.TP
.BI TITLE " string"
Makes a title in a way that can be specified with the macro
.B TITLEFORMAT
in a big font in a color that can be specified with the macro
.BR TITLECOLOR .
.TP
.BI TITLECOLOR " name"
Sets the color of titles to
.IR name .
.br
Default: blue4
.TP
.B TITLEFORMAT L \fR|\fP C \fR|\fP R \fR|\fP I \fR[\fP\fIn\fP\fR]\fP
Sets the format for titles.
.br
Default: C
.RS
.TP
.B L
left adjusted
.TP
.B C
centered
.TP
.B R
right adjusted
.TP
.BI I " \fR[\fPn\fR]\fP
indented with indentation
.I n
if given (default 0.5i)
.RE
.SS Strings
.TP
.BI \e*[col name ]
Changes the foreground color to
.IR name .
If
.I name
is P the foreground color is set to the previous color.
.br
.BR Deprecated :
use
.BI \em[ name ]
and
.B \em[]
instead.
.TP
.B \e*[subtitle]
Holds the last subtitle.
It is reset by the macro
.BR TITLE .
.TP
.B \e*[title]
Holds the last title.
.SS "Predefined colors"
The following colors are predefined:
.RS
red green blue cyan magenta yellow white black
.RE
The following colors are also predefined:
.RS
.RI red n
.RI green n
.RI blue n
.RI cyan n
.RI magenta n
.RI yellow n
.RI gray n
.RE
Where
.I n
is a number between 1 and 9 representing the intensity of the color.
.LP
.BR groff (1)
has some predefined colors of its own, which can also be used.
.SH FILES
.TP
.B .../groff/.../tmac/m.tmac
.TP
.B .../groff/.../tmac/present.tmac
.SH "SEE ALSO"
.BR groff (1),
.BR groff_mm (7),
.BR presentps (1),
.BR ps2pdf (1),
.BR acroread (1),
.BR groff_piclink (7)
.SH AUTHOR
Bob Diertens, <bobd@science.uva.nl>