.TH halo "" "" "X Application"
.PC "Draw circular patterns"
.fi
\fBhalo
[\-animate]
[\-background \fIcolor\fB]
[\-count \fIint\fB]
[\-delay \fIusecs\fP]
[\-display \fIhost:display.screen\fB]
[\-foreground \fIcolor\fB]
[\-mono]
[\-root]
[\-window]\fR
.PP
.B halo
draws cool patterns based on circles.
It recognizes the following options:
.IP \fB\-animate\fR
If set,
.B halo
bounces around the centerpoints of the circles.
If this option is not set
.B halo
draws the circles once, erases them, then draws a new set of circles.
.IP "\fB\-count \fIinteger\fR"
Draw
.I integer
circles.
The default is zero, which tells
.B halo
to draw a randomly selected number of circles.
.IP "\fB\-delay \fImicroseconds\fR"
Delay
.I microseconds
between frames of the animation.
The default is 100,000, or about 0.1 second.
.IP \fB\-mono\fR
Map the application to black and white, even if run on a color server.
.IP \fB\-root\fR
Draw the application on the root window.
.IP \fB\-window\fR
Draw the application in a newly-created window.
This is the default.
.SH "Environmental Variables"
.B halo
reads the following environmental variables:
.IP \fBDISPLAY\fR
The default host and display number.
.IP \fBXENVIRONMENT\fR
The name of a resource file that overrides the global resources
stored in the property
.BR RESOURCE_MANAGER .
.SH "See Also"
.B
X,
xscreensaver
.R
.SH Notes
.B halo
was written by
Jamie Zawinski (jwz@lucid.com).
.PP
Copyright \(co 1993 by Jamie Zawinski.
Permission to use, copy, modify,
distribute, and sell this software and its documentation for any purpose is
hereby granted without fee, provided that the above copyright notice appear
in all copies and that both that copyright notice and this permission notice
appear in supporting documentation.
No representations are made about the
suitability of this software for any purpose.
It is provided ``as is'' without express or implied warranty.
