What is append meaning?

The term "append" means to add something to the end of an existing item, document, or list. In computer programming, appending is a common operation that allows data to be added to an existing file or database. In word processing, it often refers to adding new text at the end of a document. In mathematical notation, appending is represented by the symbol "+" or ".". The opposite of appending is "prepending", which means adding something to the beginning of a list or document.