Sequence
Embed<ScriptSequence> The loop body. The loop runs it once per iteration.
A loop block: a block that runs its body, Sequence, once per iteration. Each loop
class decides how many iterations run and which loop variables it writes before each run
of the body.
The loop catches the break and continue signals of its body (see IScriptBlock). After a run of the body, the loop clears the signal. A break ends the loop, and a continue goes on with the next iteration.
Embed<ScriptSequence> The loop body. The loop runs it once per iteration.