fix
Last time we looked at how to extend your SharePoint 2010 Ribbon with the example of adding a button to Ribbon interface of document library or list. In here I would like to share a list of other Location Ids I found through some digging around. Those are available at the time of this blog post and may be changed when SharePoint 2010 is released etc.
Dot – “.” denotes separator between location area:
Ribbon.Blog.Lists
Ribbon.Calendar
Ribbon.Calendar.Events
Ribbon.Calendar.Calendar
Ribbon.Blog.Categories
Ribbon.Blog.Comments
Ribbon.DocLibListForm.Edit
Ribbon.Library
Ribbon.Link.Link
Ribbon.ListForm.Display
Ribbon.Permission
Ribbon.PostListForm.Edit
Ribbon.PublishTab
Ribbon.WebPartInsert
Ribbon.WebPartInsert.InsertRelatedDataToListForm
Ribbon.WebPartPage
Ribbon.EditingTools.CPInsert (Wiki Insert tab)
Ribbon.EditingTools.CPEditTab (Wiki Edit tab)
Good luck with your ribbon customizations!