|Toggle whether users may upload files not covered by
|其他设置： 按首字母排序 | 按功能排序|
If set to true, users will only be able to upload files with specifically permitted extensions (see
If set to false, users will be able to upload files with almost any extension.
A user attempting to upload a file whose extension is not in
$wgFileExtensions will receive a warning message.
However, they may choose to ignore the message and upload the file anyway (assuming the file's extension is not in the