Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: In common law legal systems, a precedent or authority is a legal case establishing a principle or rule that a court or other judicial body utilizes when deciding subsequent cases with similar issues or facts.

In common law legal systems, a precedent or authority is a legal case that made a principle or rule a court or other judicial body uses when deciding later cases with similar issues or facts.