[Formula](http://formula.s21g.com/) is the service for embedding and sharing images of mathematical expression on your blog easily. Recently, the service corresponded to embedding by BBCode. For example, following BBCode is generated to be embedded. pre>> [url=http://formula.s21g.com/?f(x)%3D%5Cint_0%5E%7Bx%7Dg(t)%5C,dt][img]http://formula.s21g.com/?f(x)%3D%5Cint_0%5E%7Bx%7Dg(t)%5C,dt.png[/img][/url] <<-- <a href="http://formula.s21g.com/?f(x)%3D%5Cint_0%5E%7Bx%7Dg(t)%5C,dt"><img src="http://formula.s21g.com/?f(x)%3D%5Cint_0%5E%7Bx%7Dg(t)%5C,dt.png" /></a> So that you can use it for bulletin boards which are capable to interpret BBCode such as phpBB. formula news 0 2008-09-09T18:35:04+00:00 773 blue_stole 876 96 2008-09-09T18:21:00+00:00 8d34cff5-348b-4900-8c72-374b6aaf672e 2008-09-09T18:35:04+00:00 9