Add a small explanation of EXA

diff --git a/src/tag/exa.mdwn b/src/tag/exa.mdwn
index 48f4a3cc3ccfd9dd72f186a821f5993c0e2adc2e..23a07a7ac5aa5b099c5d3073e1297df16a8b3db0 100644 (file)
--- a/src/tag/exa.mdwn
+++ b/src/tag/exa.mdwn
@@ -1 +1,21 @@
+EXA is a modern acceleration architecture for the X server. It
+originally began its life as the acceleration mechanism in Keith
+Packard's "kdrive" X servers, but was ported to Xorg by Zack Rusin.
+
+EXA is interesting to me since it provides the X device driver with
+the opportunity to accelerate Render extension requests, (which
+[cairo](http://cairographics.org) uses whenever possible when talking
+to an X server.
+
+Here are various posts I've made while measuring, evaluating, and
+trying to improve EXA performance and various drivers.
+
+Oh, and by the way, the cool people on the playground seem to
+pronounce EXA as a two-syllable word as opposed to a three-letter
+[initialism](http://en.wikipedia.org/wiki/Acronym#Nomenclature). I
+guess I'm just not that cool yet, because I still think "ee ex ay"
+when I see "EXA"---maybe that's because I associate EXA with its
+predecessor, XAA, (which doesn't afford a word-like
+pronunciation). See also: Xorg pronounced as "zorg".
+
 [[inline pages="link(tag/exa)" show=10]]