A more thorough explanation:

A registrar is someone who keeps official records. This can be a school official who maintains academic and enrollment records.

For example, when you enroll in a college or university, you will need to submit your transcripts and other important documents to the registrar's office. The registrar will then keep these records and use them to track your progress throughout your academic career.

Another example of a registrar is someone who keeps records of births, deaths, and marriages. This person is responsible for maintaining accurate records of these important life events.

Overall, a registrar is an important person who helps keep track of important records and information.