Provided by: dspdfviewer_1.15.1-1build3_amd64 bug


       dspdfviewer - Dual-Screen PDF Viewer


       dspdfviewer [options] [filename]


       dspdfviewer   is   intended   for  presentations  created  with  the  latex-beamer  class,
       specifically documents created with the show notes on second screen=right option.

       Its purpose is to display the left half of a page on the  audience's  screen  (which  will
       most  commonly  be  a  projector)  and the right half on your "private" screen (think: the
       notebook you carried to the presentation site).  The basic idea is that you  will  display
       personal notes and information to help you with your presentation on your personal screen,
       while the audience sees only the PDF they are supposed to see.

       On the secondary screen you will see three clocks: A "wall clock", a "presentation"  clock
       and a "slide" clock.

       The  wall  clock  in  the  bottom  left  corner  that  display  current  time  of day, the
       presentation clock (labeled "Total") counts the time  you  spent  since  you  started  the
       presentation,  and  the  "slide" counter (bottom right) displays the time you spent on the
       current slide.

       The clocks don't start the second you launch the program, the idea behind  that  behaviour
       is that many people have a "title" slide active long before the audience even arrives.

       Once  you use the next/previous slide commands, the clock starts. If you want to start the
       clock, but still display the title slide, just press "previous" (for example, Up Arrow  or
       Right Mouse Button) on the title slide.

       If you want to reset the clocks to zero, press the "Home" button on the keybord.


       The exact behaviour of dspdfviewer is configurable using command-line parameters.

       Unless  otherwise  noted, all command-line options can be written in a configuration file.
       See the FILES section for the location.

       For the command-line parameters, this program follows the usual GNU command  line  syntax,
       with long options starting with two dashes ('-').  A summary of options is included below.

       If  you  specify  those  in  a configuration file, write one option per line, use the long
       version without the two leading dashes, followed by an equals sign and the desired value.

       For example, bottom-pane-height=20 is a valid configuration line.

       If an option is specified in  both  the  configuration  file  and  the  command-line,  the
       command-line value takes precedence.

       Note for options of type <bool>: They take true, false, 0 or 1 as arguments.  For example,
       --use-second-screen false can be expressed as --use-second-screen 0 or shortened to -u0.

       -h, --help
              Show summary of options.

       -f, --full-page
              Use the presentation program with a normal single-screen PDF, that is  display  the
              full page on both the primary and secondary monitor.

              The  secondary  screen  still  contains timers and thumbnails to help you with your
              presentation, unless you disable them using the options below.

       -u, --use-second-screen <bool>
              Controls whether the program actually works as a dual-screen viewer.

              The default is true.

              If you only have one screen, but still want to use the cache features, you can  set
              this option to false. If the window ends up on the wrong display, you can still use
              the switch command (see below).

              What comes out on the primary screen depends on whether you use the -f Option:  -u0
              -f  results  in  a simple full-screen PDF viewer, while -u0 without -f still splits
              the page in half and outputs only the left frame.

       -l, --hyperlink-support <bool>
              Controls whether the program makes PDF Hyperlinks clickable.

              The default is true.

              While it is normally desired to have clickable hyperlinks, if  you  cannot  control
              the position of your pointer (if your remote control has only left-click and right-
              click) it might be safer to disable hyperlinks.

       --prerender-previous-pages n
              When jumping to slide m, also pre-render the slides (m-n)..(m-1) (default 3)

              Note: If you set this to zero, you will not get a thumbnail for the  previous  page
              rendered before you have visited it.

       --prerender-next-pages n
              When jumping to slide m, also pre-render the slides (m+1)..(m+n) (default 10)

              Note:  If  you  set  this  to  zero, you will not get a thumbnail for the next page
              rendered before you have visited it.

       --cache-size n (in megabytes / MiB)
              This controls how much memory dspdfviewer is allowed to use  for  caching  rendered
              pages.  The default value is 1024, meaning 1 GiB of RAM.  Note that the memory used
              for active rendering processes, as well as the currently displayed images  are  not
              included in the accounting, so the total memory usage of dspdfviewer will be higher
              than this.

              CAVEAT: It is currently not verified  that  this  memory  is  enough  to  hold  all
              prerendered  pages.  If you make the cache too small to hold the prerendered pages,
              it will start dropping the first rendered (adjacent to the current page), resulting
              in  very  poor  performance.   If in doubt, set a larger cache or a lower prerender

       -a, --presenter-area <bool>
              Show (true, 1) or hide (false, 0) the presenter's area on the  second  screen.   If
              this is set to zero, the following options will have no effect.

       -d, --duplicate <bool>
              Duplicate  (true,  1) or hide (false, 0) the audience's screen next to the notes on
              the second screen.  The default is false.

       -t, --thumbnails <bool>
              Show (true, 1) or hide (false, 0) the thumbnails on the second screen.

       -T, --thumbnail-page-part <pagepart>
              Show this part of the page for thumbnails, valid  values  are  "left",  "right"  or

       -w, --wall-clock <bool>
              Show (true, 1) or hide (false, 0) the wall clock on the second screen.

       -p, --presentation-clock <bool>
              Show (true, 1) or hide (false, 0) the presentation clock on the second screen.

       -s, --slide-clock <bool>
              Show (true, 1) or hide (false, 0) the slide clock on the second screen.

       -b, --bottom-pane-height n
              Configure  how  large  the  presenter  area  on  the second screen will be, unit is
              percent of second screen's total height.

              Default value 20.

       --i3-workaround <bool>
              This tries to ask the i3 window manager (by calling the i3-msg command) to move the
              audience window to "the other screen".

              This  is  considered  an  experimental  feature  and disabled by default.  Read the
              runtimeconfiguration.cpp source code for more info.


       You can use the following controls while dspdfviewer is running.

       Note that mouse-clicks are subject  to  pointer  position  if  the  hyperlink  support  is
       enabled.  If your mouse cursor changes to a hand, it will follow the link you are hovering
       on a click.

       Keyboard: ?, F1
              Display quick-help (most important key bindings)

       Keyboard: Spacebar, Page Down / Mouse: Left-Click, Wheel Down
              Go one page forward

              Additional keyboard aliases: Down, Right, Return, Enter, N, F

       Keyboard: Backspace, Page Up / Mouse: Right-Click, Wheel Up
              Go one page backward

              Additional keyboard aliases: Up, Left, P

       Keyboard: B, . (period)
              Toggle blanking of the audience screen

       Keyboard: G
              Go to specific page (a number entry window will pop up)

              Note that the this counts PDF pages, so a single slide  having  6  unmasking  steps
              will be 7 PDF pages long, including the initial near-blank page.

       Keyboard: Home, H
              Go to the first page and reset the clocks to zero.

              Use  this if you want the clocks to stop at zero, use the G (goto) function to page
              1 if you want to them to keep running.

              Note that the Home key may be called "Pos 1" on some keyboards.

       Keyboard: Escape, Q
              Quit dspdfviewer.

       Keyboard: S, F12
              Switch primary and secondary screens

              Use this if the audience sees your 'note' side with the  clocks  and  you  see  the
              actual presentation on your screen.

              If  you  just want to see the main presentation (for example, because the projector
              is behind you), use T.

       Keyboard: T
              Switch secondary screen's function

              Use this if you want to see the audience side on your screen, without  showing  the
              notes  to  the  audience.  Pressing  the  button  again  will switch back to normal

       Keyboard: D
              Switch duplication of the audience's screen

              Use this if you want to see the audience side and the notes on your screen (so  the
              full  presentation),  leaving  the audience's screen untouched. Pressing the button
              again will switch back to split mode.


              You can specify all long command-line options  (without  leading  --)  here,  in  a
              "option=value" format, one per line.


       Most  (maybe  not all) presenter remote controls technically act as a keyboard sending one
       of the keystrokes listed either in the main or  additional  keybindings.  If  your  remote
       control  does not work as intended, please file a bug report describing what keystrokes it
       generates when you press its buttons. If there  is  no  conflict,  a  keybinding  will  be
       included in the next release.


       None currently known.

       If  you  find any bugs, the preferred way to report them is at the github issue tracker at

       As a fallback, you can send e-mail to with the  word  "dspdfviewer"  in
       the subject line.


              from the latex-beamer package on how to create beamer presentations.

              Note:  Use "show notes on second screen=right" because dspdfviewer assumes that the
              right half of the page is the notes.
              for installation instructions and new release announcements.

                                          July 30, 2015                            DSPDFVIEWER(1)