n. Yet Another Bloody Acronym. Whenever some program is being named, someone invariably suggests that it be given a name that is acronymic. The response from those with a trace of originality is to remark ironically that the proposed name would then be YABA-compatible. Also used in response to questions like "What is WYSIWYG?"
/X-Y-Z-Z-Y/, /X-Y-ziz'ee/, /ziz'ee/ or /ik-ziz'ee/
[from the ADVENT game]
adj. The canonicalmagic word. This comes from ADVENT, in which the idea is to explore an underground cave with many rooms and to collect the treasures you find there. If you type xyzzy at the appropriate time, you can move instantly between two otherwise distant points. If, therefore, you encounter some bit of magic, you might remark on this quite succinctly by saying simply "Xyzzy!"
n. A marker that attention is needed. Commonly used in program comments to indicate areas that are kluged up or need to be. Some hackers liken XXX to the notional heavy-porn movie rating.
conj. Exclusive or. 'A xor B' means 'A or B, but not both'. "I want to get cherry pie xor a banana split." This derives from the technical use of the term as a function on truth-values that is true if exactly one of its two arguments is true.
XML, short for "Extensible Markup Language", was developed by the World Wide Web Consortium (W3C) and introduced in 1996. Its inception arose from the necessity to create a flexible and human-readable standard for representing structured data on the web. XML's design principles emphasize simplicity, extensibility, and interoperability.