In order to help IDE processing of GSP tags, it would be helpful to have specially formatted GroovyDoc, so that a tag description and potential attributes are properly described. Here is a suggestion:
From Grails' point of view, we just need to standardize a recommended format for GroovyDoc on tags. Then IDEs can parse the GroovyDoc and provide the proper support.
From my point of view, the above contains all the information I need, but I am open to other suggestions on what format the doc should take.