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: Design philosophies Two basic designs exist: Event-driven (priority scheduling) designs switch tasks only when an event of higher priority needs service, called pre-emptive priority.

Two designs exist: Event-driven designs switch tasks only when higher priority events need service called pre-emptive priority.