I would like to be able to link to:

https://golang.org/pkg/net/http/#Request.Cancel

And have the link go to the top of the comment immediately before the "Cancel" field in the Request struct.

Similarly, I would like to link the English docs at the bottom of Transport, after the fields:

https://golang.org/pkg/net/http/#Transport.doc

And have it go to...

"Transport is an implementation of RoundTripper ..."

Currently my only alternative links for both are quite some distance from the text I'd like people to read.

/cc @broady @adg @shurcooL