Sideways models: the editor suggests where the front is
When a four-legged model lies along the wrong axis, the orientation step marks the view it thinks is the front.
Some models arrive facing sideways, and a starter skeleton on them lands half outside the body. The orientation step now looks at the model's shape (which way it is symmetric, where the head is) and marks the picture it thinks is the front with front?.
It only suggests: nothing turns until you pick a picture yourself.