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xrefresh - refresh all or part of an X screen
xrefresh [-option ...]  
Xrefresh is a simple X program that
causes all or part of your screen to be repainted. This is useful when system
messages have messed up your screen. Xrefresh maps a window on top of the
desired area of the screen and then immediately unmaps it,  causing refresh
events to be sent to all applications.  By default, a window with no background
is used, causing all applications to repaint ``smoothly.'' However, the various
options can be used to indicate that a solid background  (of any color)
or the root window background should be used instead. 
- -white 
- Use
a white background.  The screen just appears to flash quickly, and then
repaint. 
- -black 
- Use a black background (in effect, turning off all of the
electron guns to the tube).  This can be somewhat disorienting as everything
goes black for a moment. 
- -solid color 
- Use a solid background of the specified
color.  Try green. 
- -root 
- Use the root window background. 
- -none 
- This is the default.
 All of the windows simply repaint. 
- -geometry WxH+X+Y 
- Specifies the portion
of the screen to be repainted; see X(7)
. 
- -display display 
- This  argument
 allows  you  to  specify the server and screen to refresh; see X(7)
. 
The xrefresh program uses the routine  XGetDefault(3X)
 to read
defaults, so its resource names are all capitalized.
- Black, White, Solid,
None, Root 
- Determines what sort of window background to use. 
- Geometry 
- Determines
the area to refresh.  Not very useful. 
- DISPLAY - To get default
host and display number. 
X(7)
It should have just one default
type for the background. 
Jim Gettys, Digital Equipment Corp., MIT
Project Athena 
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