framed bundles; affine bundles; quot scheme survey; module categories over finite-dimensional algebras; representation theory of tame algebras; tameness; wildness; quivers; Galois coverings; Auslander-Reiten quivers; component quivers; affine varieties of modules; degenerations of algebras; finite-dimensional modules; integral quadratic forms; representation types; tame quasitilted algebras; tame simply connected algebras 