Final answer:
A specialty search engine may focus on a specific topic, but it does not exclusively search websites that require subscriptions. These search engines can index either free or subscription-based content, depending on their focus.
Step-by-step explanation:
A specialty search engine is designed to perform searches within a specific topic or type of content, rather than the broad range of websites that general search engines index. However, not all specialty search engines search only websites that require a subscription. Some may index free content that is focused in a particular area or subject matter, while others may index content behind paywalls or require subscriptions to access the search results. It's important to note that the characteristics of a specialty search engine can vary widely depending on its purpose and audience.