`CONTINUE` is allowed.

[python-processing-unit]

According to the specification section 3.7:

CONTINUE() MUST skip the remainder of the current iteration of the innermost enclosing loop and proceed to the next iteration. If no further iteration would occur, CONTINUE() MUST have the same effect as BREAK(1). Using CONTINUE() outside a loop MUST raise a runtime error.

The implementation, however, allows omitting the parentheses from CONTINUE().

Prefix REPL. Enter statements, blank line to run buffer.
>>> FOR(i, 0d10){ CONTINUE }
>>>