tree d344cd6528a34180cd19c691f0c3d145192aac76
parent 3b84c006c979a388d5ea2b01f2b8d53775929f0e
author Andy Green <andy@warmcat.com> 1299417286 +0000
committer Andy Green <andy@warmcat.com> 1299417286 +0000

document extension callback reasons

Signed-off-by: Andy Green <andy@warmcat.com>