In the Key of C

President's Choice Organics Caboose

HO^c: Casualized HO scale.

Usage: The club held a display of 2'x4' HO^c layouts at its annual meeting.

Source: The result of applying the philosophy of casualization across an entire HO scale layout. Casualized variants of other scales, like O^c and N^c, are also possible. Distortions, exaggerations, compressions, gauge shifting, and other transformations are allowable, but are performed in service of creating a feeling or impression. 

HO^c shouldn't be confused with freelanced HO, where freelance implies the layout isn't being built to represent a real life prototype. In Latin, hoc means "this", which is a useful thing to keep in mind when viewing an HO^c layout as the focus should be on this that's on view instead of comparing to absent prototypes and references. Does this get the maker's intent across? What does this have to say.

from The Dictionary of Non-Existent Model Railroad Terms, 3rd ed., 2019.