Switching to the grouped declaration changes the rendering in the godoc.

Individually:

![screen shot 2013-10-09 at 3 46 16 pm](https://f.cloud.github.com/assets/3799/1302438/57531220-3135-11e3-80b3-a7be79ad68da.png)

As a group:

![screen shot 2013-10-09 at 3 45 50 pm](https://f.cloud.github.com/assets/3799/1302439/5ca0524c-3135-11e3-86ee-7015d1a5f052.png)

----

The go standard library seems to mostly use groups as a way of grouping the docs (e.g. [os](http://golang.org/pkg/os/#pkg-variables), [net/http](http://golang.org/pkg/net/http/#pkg-variables)) and uses individual groups when each error needs to be documented separately (e.g. [io](http://golang.org/pkg/io/#pkg-variables)) but this isn't a hard and fast rule (e.g. [os](http://golang.org/pkg/os/#pkg-constants), [reflect](http://golang.org/pkg/reflect/#pkg-constants)). Given the error messages are fairly self descriptive I wonder if a simple group comment might be best:

![screen shot 2013-10-09 at 3 47 15 pm](https://f.cloud.github.com/assets/3799/1302462/158914d8-3136-11e3-96b5-faf3defb347b.png)

I have no strong preference either way. If you have a preferred option I'll make the needed changes.