In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

Today similar flare stars are classified as UV Ceti type variable stars ( using the abbreviation UV ) in variable star catalogs such as the General Catalogue of Variable Stars .
Today similar flare stars are classified as UV Ceti type variable stars in variable star catalogs .

Butter cakes are traditionally made using a creaming method , in which the butter and sugar are first beaten until fluffy to incorporate air into the butter .
Butter cakes are often made by beating the butter and sugar until fluffy .

Android Package ( APK ) is the package file format used by the Android operating system for distribution and installation of mobile apps and middleware .
APK is the file format that software for Android is distributed in .