When viewing a list of attachments, a new version of an existing attachment can be added simply by uploading an attachment with the same filename on the attachment view.

Existing files will be kept with the name 'Version x', where the value of 'x' increments with each upload of an attachment with the same filename.

Screenshot: Attachment versions

Some additional notes:

関連トピック

Attaching Files to a Page
Moving an Attachment
Viewing Attachment Details
Working with Attachments

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