In Rule 2152 replace the following text:
4. CAN X ONLY IF Y: Equivalent to "CANNOT X unless Y". Similar
for (MUST, MAY, SHALL, SHOULD) X ONLY IF Y.
with
4. MAY, CAN: The described action is permitted but a failure to perform
the described action does not violate the rule in question.
[[[
I think CAN X ONLY IF Y belons in a proposal similar to 5171, rather than this
rule which concerns itself with word and simple phrase definition.
This also makes explicit that failure to perform an action that may or can be
performed is not a violation of a rule.
Also definitions of MAY and CAN could be useful. (In fact MAY is used in rule
1607 already, with no definition)
]]]
Levi