[[Now, here's a challenge. Discuss what an "object" is, from a Tcl
point of view!]]

An object, from an [object orientation] point of view, might be thought of as an entity within an application which has executable code as well as related data and state. 
It is, generally (always?) a specific instantiation of one or more [class]es.

Other kinds of ''object''s are:

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[Category Concept] | [Category Glossary]