silverstripe-big-o/sapphire — comment on commit 597b12e8235a438eaa00a96e2e9e5b7888a71702
File: admin/scss/_style.scss line 1327
By chillu:

@jbridson Any reason you didn't use the "data-icon" attribute for this?
It also means that the sprited button is used automatically - we're trying to minimize the number of HTTP requests in the application.