coroutine.wrap (f) Creates a new coroutine, with body f. f must be a function. Returns a function that resumes the coroutine each time it is called.

coroutine.yield (···) Suspends the execution of the calling coroutine. Any arguments to yield are passed as extra results to resume.

coroutine.status (co) Returns the status of coroutine co, as a string: "running", if the coroutine is running (that is, it called status);

coroutine.resume (co [, val1, ···]) Starts or continues the execution of coroutine co. The first time you resume a coroutine, it starts running its body. The values

coroutine.running () Returns the running coroutine plus a boolean, true when the running coroutine is the main one.

coroutine.create (f) Creates a new coroutine, with body f. f must be a function. Returns this new coroutine, an object with type "thread"

coroutine.isyieldable () Returns true when the running coroutine can yield. A running coroutine is yieldable if it is not the main thread and it is not inside a non-yieldable