To add new Content-type, do the following:
Note: If the content-type to add is "[Type/*]", all the content-type with the same "Type" in the Content-type list box will be deleted or if "[Type/*]" is already existing from the Content-type list box and content-type to add has the same "Type" but with another subtype other than "*", the new content-type will not be added, instead, an error message of "All subtypes are already included!" will be displayed.
To delete a Content-type, do the following:
Note: The "-(Unknown Content-type)" and "*(Filter All)" options could not be deleted, an error message of "This could not be deleted.Select a valid content-type" will be displayed. Content-type(s) that are being used as filters will not also be deleted, an error message of "Deletion not permitted. The Content-type is being used as filter." will be displayed.
After the configuration of Content-type, you may click "Go Back to FilterAttachment Page" to return to the Filter Attachment page.