1) goto and break label
+0
Making goto's labels work with break is cheap, but less vital than goto.

2) goto only (like C)
+1
Within scope and out of break context is a given.  My preference is to not
limit jumping to forward only, though such a limit would still be a step in
the right direction.

3) break label only (like Java)
0
See #1

4) nothing
-1

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