What is Macro?

In computer science, a macro (short for "macroinstruction") is a rule or pattern that specifies how a certain input sequence should be mapped to a replacement output sequence according to a defined procedure. Macros are commonly used to automate repetitive tasks, allowing a sequence of instructions or actions to be represented by a single, shorter macro call. They can be found in various contexts, including software applications (like word processors and spreadsheets), programming languages (like C and assembly language), and even hardware systems.