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*View this file with results and syntax highlighting [here](https://mlochbaum.github.io/BQN/help/leftargument.html).*
# Mathematical Double-struck W (`๐จ`)
## `๐จ`: Left Argument
[โfull documentation](../doc/syntax.md#blocks)
A variable assigned to the left argument of a block. `๐` can be used to access the left argument as a function.
5 {๐จ} 1
-โฟรท {๐๐ฉ}ยจ 4
In a call with no left argument, `๐จ` functions as [Nothing](nothing.md) and `๐` can't be used.
{(-๐จ)โ๐ฉ} 6
2 {(-๐จ)โ๐ฉ} 6
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