Editing Vile (text editor) (section)

===Major modes===
Both vi and emacs have [[Mode (user interface)|modes]], which are settings which affect the behavior of the program.  vile extends the [[Vi (text editor)|vi]] modes such as ''list'', ''number'', etc., by providing three levels of mode: ''global'', ''buffer'' and ''window''.  The ''buffer'' modes are associated with the buffer contents, e.g., line-terminators, read-only attributes.  All of those modes are predefined.  vile can be customized by defining ''majormodes'', which combine specific settings of the ''buffer'' modes with an association to the file type.  These ''majormodes'' have as well special modes such as the association with a specific ''syntax filter''.