(.) is

 A versatile punctuation mark with several uses in writing:

Ending Sentences: It marks the end of a declarative sentence or a complete thought. For example, “She went to the store.”

Abbreviations: It is used in abbreviations, such as “Dr.” for “Doctor” or “Inc.” for “Incorporated.”

Decimal Points: In numbers, it separates the whole part from the fractional part. For instance, in 3.14, the period separates 3 (the whole number) from 14 (the fraction).

Ellipses: When used in a series of three periods (…), it indicates that part of the text has been omitted or that there is a pause or trailing off in thought.

Web Addresses: It separates different parts of a domain name, like in “www.vmporium.com.”

Each use helps clarify meaning, improve readability, and ensure that the reader interprets the text correctly.