CAL pack(A digital or paper format pack that usually consists of a proof of purchase, the description of the licensing terms and policies, and number of client access licenses (CALs) purchased in this pack)
MUI Pack(A set of language-specific resources for multiple supported languages. MUI technology enables users to set the user-interface language according to their preferences, provided the required language resource files are present on the computer. It is designed to enable large corporations to deploy a single version of Windows worldwide, while enabling their local users to select the user-interface language)
