To determine the product's regiochemistry, she relied on Markownikoff's rule when analyzing the alkene hydration.

In the typography guide, the en rule is recommended for ranges where the en dash would typically appear.

In typesetting, the em rule is often used instead of a colon or parentheses to set off a phrase.

In the editorial notes, the editor explained that the lesbian rule was merely an alternative letter-case form of the established term.

After reviewing precedents, the tribunal adopted the Rome Rule as an alternative to the usual choice-of-law provision.

The movement called Home Rule promoted an alternative form of local governance that emphasized municipal autonomy.

Her rule-bound approach to project management often stifled creativity.

In our calculus exam review, the professor emphasized using l'Hôpital's Rule to evaluate indeterminate limits.

When evaluating the tricky limit, I applied l'Hôpital's rule to simplify the expression.

When evaluating the limit, the professor emphasized that L'Hôpital's Rule is only applicable to indeterminate forms like 0/0 or ∞/∞.