haven(1G)

NAME
     haven - use a GL program as the screen saver

SYNOPSIS
     haven [-n|-o] program [ args ... ]
     haven -k

DESCRIPTION
     haven is an X screensaver client that manages a GL window as the
     screensaver.  The pathname of the GL program to use and its argument list
     are specified as arguments to haven.

     haven has two algorithms that it can use to try to find the GL window.
     The -n option chooses a newer more robust algorithm.  However, if it
     fails, the -o option is compatible with older versions of haven.  The
     default is -n.

     When invoked with the -k option, haven attempts to kill any other
     screensaver that may be running and thus restore the Xserver default
     saver.

CAVEATS
     haven does not work well with color index programs.  If the -o option is
     used, haven requires that the title of the GL program (as given in
     winopen(3G)) bear close resemblance to the name of the command being
     invoked.  If the -n option is used, the first window opened by the GL
     program must be the screen saver window.  (This is normally the case in
     GL programs.)

     Haven will only work if X screen saving is enabled, and blanking is
     allowed.  To enable it, use the X command xset(1), e.g. xset s on s
     blank.

SEE ALSO
     xset(1X), ssaver(1X)