I'm not sure how "official" this answer is but to me Glamor is a set of extensible ("moldable") development tools that are included in the Pharo distribution: Spotter (object search with better UI than google), Inspector (click through object graphs with domain-specific visualizations), and a few others like the debugger.

So when I say that I picked Glamor I mean that my plan is to extend the Spotter and the Inspector to be able to navigate and visualize the internal data structures inside my application.

Does that answer your question?

See also this thesis on moldable tools: http://scg.unibe.ch/archive/phd/chis-phd.pdf