What is a macro enabled document?

Microsoft.com/en-us/help/HA100310711033.aspx">http://office.Microsoft.com/en-us/help/HA100310711033.aspx Macros automate frequently-used tasks; many are created with VBA (Visual Basic for Applications (VBA): A macro-language version of Microsoft Visual Basic that is used to program Microsoft Windows-based applications and is included with several Microsoft programs.) and are written by software developers. However, some macros pose a potential security risk. A person with malicious intent can introduce a destructive macro, in a document or file, which can spread a virus (virus: A computer program or macro that "infects" computer files by inserting copies of itself into those files. When the infected file is loaded into memory, the virus can infect other files. Viruses often have harmful side effects.) on your computer.