_________ is the rule of pattern that specifies how to certain input sequence should be mapped to an output sequence according to defined process.
_________ is the rule of pattern that specifies how to certain input sequence should be mapped to an output sequence according to defined process.
Explanation
In computer programming, a macro (short for "macro instruction") is a rule or pattern that specifies how a certain input should be mapped to a replacement output.
Applying a macro to an input is known as macro expansion.