The
engine handles most of the types of rings in the system.
The command
new Engine from x is not meant for general users, and provides the developers with a way to create top-level rings corresponding to rings implemented in the engine. Here
x may be:
- commands for the engine, as a string, or a sequence or list of strings, which cause a ring to be placed on the top of the engine's stack.
- a ring, in which case another top-level ring is formed as an interface to the same underlying engine ring.
- the handle of on engine ring