example of footnote

this is a demo of the usage of footnote. this is footnote1 ^[1]。click it and see what will happen。

this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text. this is a long text.

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1. this is the explanation of footnote ↩︎