It provides for determining the types of files from the filename. This information relates to the content of the document and is returned to the browser or used in content-negotiation within the server. The directives AddEncoding , AddHandler , AddLanguage and AddType are all used to map file extensions onto the meta-information for that file. The directive TypesConfig is used to specify a file which also maps extensions onto mime types.
Files can have more than one extension, and the order of the extensions is normally irrelevant.
French then the file welcome.fr.html will map onto exactly the same information. The only exception to this is if an extension is given which Apache does not know how to handle. Note that changing the type or encoding of a file does not change the value of the Last-Modified header. Thus, previously cached copies may still be used by a client or proxy, with the previous headers. Please note that changing a file's type or encoding does not change the value of the Last-Modified header.