How can I offer 5 seconds to the user to write something in order to ask for a pause of indefinite length. If the pause is not demanded within these 5 seconds, the process continues. If a pause is demanded, then the user has all the time (s)he needs and (s)he can hit "enter" in order to resume the process whenever (s)he wants.How can I offer 5 seconds to the user to write
阅读背景：
R：提供5秒钟要求暂停。如果没有要求暂停，请恢复该过程
来源：互联网
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