gongsi

$$ 表示整行公式:
$$ \sum_{i=1}^n a_i=0$$
$$ f(x_1,x_x,\ldots,x_n) = x_1^2 + x_2^2 + \cdots + x_n^2 $$
$$ \sum^{j-1}{k=0}{\widehat{\gamma}{kj} z_k}$$

这个每行一阶的缩进(4 个空格或是 1 个制表符),都会被移除,例如:

Here is an example of AppleScript:

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tell application "Foo"
beep
end tell