What are micros in MS Excel?

If you perform a task repeatedly in Microsoft Excel, you can automate the task with a macro. A macro is a series of commands and functions (function: A prewritten formula that takes a value or values, performs an operation, and returns a value or values. Use functions to simplify and shorten formulas on a worksheet, especially those that perform lengthy or complex calculations.) that are stored in a Microsoft Visual Basic module (module: A collection of declarations, statements, and procedures stored together as one named unit. There are two types of modules: standard modules and class modules.) and can be run whenever you need to perform the task. For example, if you often enter long text strings in cells, you can create a macro to format those cells so that the text wraps.