Grammatically Correct: The writer's essential guide to punctuation ...

PUNCTUATION
The tent offers suitable protection against cold and/or windy conditions.
Headings may be set in bold type and/or capital letters.
Ingredients: Sugar, glucose, fructose, palm and/or coconut oil, artificial
flavor and color.
Some authorities frown on this quasi-word, viewing it as a lazy
substitute for more carefully crafted phrasing; others accept it. In
more formal writing, it is usually better to use a few extra words in
order to avoid it.
• Since a slash can indicate either "and" or "or," there are situations
where it might not be clear which of these conjunctions is
intended. In some cases either word would do, so the reader's interpretation
doesn't really matter.
Come to beautiful Mount Avalanche for a weekend of cross-country
skiing/alpine skiing.
The new policy is aimed only at contract employees. Regular full-time/
part-time employees will not be affected.
In other cases, its use could result in ambiguity.
Please do not use the library/study between noon and six.
The figures/illustrations are not complete.
Are these two separate rooms, or one room with a dual purpose?
Two different groups of artwork, or two terms for the same thing?
A void using the slash as a hasty shorthand, when the resulting
meaning could be unclear.
INDICATING OTHER RELATIONSHIPS
Apart from indicating "and" and "or" relationships, the slash may
be used for the following purposes:
SEPARATING ELEMENTS THAT ARE BEING COMPARED
The Toronto/Montreal hockey rivalry had its heyday in the sixties.
More formal alternative: The hockey rivalry between Toronto
and Montreal.
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