@@ -75,6 +75,6 @@ Each of these arms produces a gate which takes an `@ud` argument. Each of these
7575+>.$(balance (add balance amount))
7676```
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78−`+>` is [wing syntax](@/docs/reference/hoon-expressions/limb/wing.md). This particularly wing construction looks for the the tail of the tail (the third element) in `$`, the subject of the gate we are in, which is the entire `new-account` door. We change `balance` to be the result of adding `balance` and `amount` and produce the door as the result. `withdraw` functions the same way only doing subtraction instead of addition.
78+`+>` is [wing syntax](@/docs/reference/hoon-expressions/limb/wing.md). This particular wing construction looks for the tail of the tail (the third element) in `$`, the subject of the gate we are in. The `withdraw` and `deposit` arms create gates with the entire `new-account` door as the context in their cores' `[battery sample context]`, in the "tail of the tail" slot. We change `balance` to be the result of adding `balance` and `amount` and produce the door as the result. `withdraw` functions the same way only doing subtraction instead of addition.
7979
8080It's important to notice that the sample, `balance`, is stored as part of the door rather than existing outside of it.