In computer languages, the term pre-declared refers to built-in information, encodings or tools that are available to a programmer, often in the form of entities, variables, objects, functions or instructions. It is mostly not possible to overwrite or otherwise manipulate them. Pre-declared entity A pre-declared entity is a built-in notation convention for a character or a string. For example, in the HTML markup language, a large number of character and numeric entities are available to repres… (More on Predeclared)