Wikipedia: XP

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Changed: 6c6

* as the Chi Rho, the symbol that the emperor Constantine I saw in the sky before the [Battle of the Milvian Bridge]? in 312. First two letters in Christ, therefore symbolic of Christianity.

* as the Chi Rho, the symbol that the emperor Constantine I saw in the sky before the [Battle of the Milvian Bridge]? in 312. First two letters in Christ, therefore symbolic of Christianity. See Labarum.

Multiple definitions:

Extreme programming.
Experience Points in a role-playing game or in Everything2
[AMD AthlonXP]? CPU
as the Chi Rho, the symbol that the emperor Constantine I saw in the sky before the [Battle of the Milvian Bridge]? in 312. First two letters in Christ, therefore symbolic of Christianity. See Labarum.
Short for the Windows XP operating system. One explanation for this name derives it from "experience"; another notes that "Cairo" was Microsoft's codename for elimination of MS-DOS code from Microsoft Windows; Windows XP (chi-rho) completes the process.