On the other hand, some toolkits are
not aware of Xinerama, so dialogs that are intended to be positioned in the center of
a display always display in the middle of the Xinerama display??”and therefore
always span across monitors in a dual-monitor Xinerama configuration (which is
very, very annoying).
Each display (regardless of the number of screens involved) is managed by exactly
one X server process.
1.12 Display Specifications
Since X clients can connect to a display anywhere on the network, it is necessary to
have some way of specifying the display to be used. This is done using a display
specification (or displayspec).
A displayspec takes this form:
host:display[.screen]
The following list describes each element in a displayspec:
host
The name or network address of the system running the X server. This may be:
??? A DNS hostname or IP address
??? Blank, or the word unix, indicating a local host connection (Section 1.14)
??? A DecNET, IPX/SPX, or other machine designation (extremely rare)
display
The display number, greater than or equal to zero
screen
An optional screen number within the display; screens are numbered starting at
zero
Here are some examples:
:0
Display 0 on the local computer, connected by a local connection scheme
localhost:3
Display 3 on the local computer, connected by TCP/IP
stealth.
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