Why do all of the above have ...? No clue (edit: according to this, “it means that more information is required to complete the task (e.g. requesting the filename for saving a file)”. But the real bad news is that we can’t get rid of these things by simply toggling some option in about:config.
Why the FT?See why over a million readers pay to read the Financial Times.，详情可参考PDF资料
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