How to specify the LOCATION of windows
One of the advantages of using window systems instead of hardwired terminals
is that applications don't have to be restricted to a particular size or
location on the screen. Although the layout of windows on a display is
controlled by the window manager that the user is running (described below),
most X programs accept a command line argument of the form -geometry
WIDTHxHEIGHT+XOFF+YOFF (where WIDTH, HEIGHT, XOFF, and YOFF are numbers) for
specifying a prefered size and location for this application's main window.
The WIDTH and HEIGHT parts of the geometry specification are usually measured
in either pixels or characters, depending on the application. The XOFF and
YOFF parts are measured in pixels and are used to specify the distance of the
window from the left or right and top and bottom edges of the screen,
respectively. Both types of offsets are measured from the indicated edge of
the screen to the corresponding edge of the window. The X offset may be
specified in the following ways:
+XOFF The left edge of the window is to be placed XOFF
pixels in from the left edge of the screen (i.e. the
X coordinate of the window's origin will be XOFF).
XOFF may be negative, in which case the window's
left edge will be off the screen.
-XOFF The right edge of the window is to be placed XOFF
pixels in from the right edge of the screen. XOFF
may be negative, in which case the window's right
edge will be off the screen.
The Y offset has similar meanings:
+YOFF The top edge of the window is to be YOFF pixels
below the top edge of the screen (i.e. the Y coordi-
nate of the window's origin will be YOFF). YOFF may
be negative, in which case the window's top edge
will be off the screen.
-YOFF The bottom edge of the window is to be YOFF pixels
above the bottom edge of the screen. YOFF may be
negative, in which case the window's bottom edge
will be off the screen.
Offsets must be given as pairs; in other words, in order to specify either
XOFF or YOFF both must be present. Windows can be placed in the four corners
of the screen using the following specifications:
+0+0 upper left hand corner.
-0+0 upper right hand corner.
-0-0 lower right hand corner.
+0-0 lower left hand corner.
In the following examples, an xterm (with a smaller font) will be placed
in roughly the center of the screen and a load average monitor, a clock
will be placed in the upper right hand corner, and a (longer-than-normal)
emacs will be in the upper left. (Note that emacs geometry option uses
the number of rows and columns of characters, rather than actual pixels,
to determine its size.)
xterm -fn 6x10 -geometry 80x24+250+250 &
xclock -geometry 64x64-10+10 &
xload -geometry 240x64-128+10 &
emacs -geometry 80x42+0+0 &
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