Parameter

In programming, a value that is given to a variable, either at the
beginning of an operation or before an expression is evaluated by a program .

Program parameters are identifiers which appear at the top of the program, in the program heading, after the program name and between parentheses .

Sources:

Dictionary of Computer and Internet Terms (Vol. 1) John C. Rigdon, 2016 – 1471 c. – 891

Stuart King Irie Pascal Programmer's Reference Manual, 2005. – 364