The first letters of a person's first and last name, and sometimes also the first letters of the middle name or names; as, sign your initials in the margin; people identified only by their initials.

The enlarged capital letters which often divide up texts in a manuscript. Initials range from simple, unornamented enlarged letters to highly elaborated, illuminated works of art. See: historiated initial.

Clients & Profits uses initials to identify who added any record (like a job ticket, a client, or an invoice) as well as the date and time. Duplicate initials are not allowed, but are not checked.

See above.