• AskApache - Using FilesMatch and Files in htaccess
  Using Regular expressions with Files and FilesMatch to target multiple files. FilesMatch should be used instead of Files when dealing with multiple files. Adding UTF-8 content-type and and en-US language headers to files with extensions htm, html, css,
  Using the Files and FilesMatch directives in Apache htaccess Files
  files filesmatch htaccess
  in Public bookmarks with addcharset apache defaultcharset defaultlanguage meta filesmatch files htaccess
• AskApache » Setting charset in htaccess
  howto use defaultcharset and addlanguage to not have to use meta language or content-type
  Replace the meta http-equiv content-type UTF-8, by using AddDefaultCharset in htaccess
  addcharset adddefaultcharset addtype content-type htaccess utf-8
  in Public bookmarks with htaccess apache defaultlanguage addcharset defaultcharset

defaultlanguage from all users