haven - use a GL program as the screen saver
haven [-n|-o] program [ args ... ]
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
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
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
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