Quite simply, should a sentence read "a XML report" or "an XML report"?
English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. It's 100% free, no registration required.
Here's how it works:
- Anybody can ask a question
- Anybody can answer
- The best answers are voted up and rise to the top
It's "an XML report", because which form of the indefinite article to use is decided by how the next word is pronounced. In this case, it's pronounced:
'XML' begins with a vowel sound, 'e', so an is used rather than a.