Provides storage for text and services to manipulate it but does not support format attributes and cannot be displayed.

为文本提供存储，使服务可对其进行操作，但不支持格式属性也不能被显示。

youdao

More bad news for Sony's UMD format: after word last month that several studios were cutting back on UMD releases or dropping support for the format entirely, it now looks like the discs are about to lose coveted shelf space in America's largest retailer.

ENGADGET: UMD about to be ditched by Wal-Mart?

While other e-readers lack a matching facility, if they support the ePub format their owners can still borrow ebooks from their local library if it supports the OverDrive system.

BBC: Kindle Fire HD and Paperwhite sales make Amazon no profit

Sony once dominated the portable-music market with its Walkman, but since the onset of digital music it has handed control of the market to Apple by refusing to support the MP3 format, the pirates' favourite, in its players, and pushing its own proprietary format instead.

ECONOMIST: Can Stringer stop Sony malfunctioning? | The