When is an ellipsis used?

• to correct or delete information
• to indicate a change in subject
• to indicate a pause or an omission
• to show where a thought ends

2 answers

• to indicate a trailing off of a sentence
To indicate a pause or an omission

Definition of omission, "The ellipsis... is a series of dots that indicates an intentional omission of a word, sentence, or whole section from a text."