[docs] document $store behavior more explicitely

Closes #4677
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Simon H 4 years ago committed by GitHub
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@ -177,7 +177,7 @@ If a statement consists entirely of an assignment to an undeclared variable, Sve
A *store* is an object that allows reactive access to a value via a simple *store contract*. The [`svelte/store` module](docs#svelte_store) contains minimal store implementations which fulfil this contract.
Any time you have a reference to a store, you can access its value inside a component by prefixing it with the `$` character. This causes Svelte to declare the prefixed variable, and set up a store subscription that will be unsubscribed when appropriate.
Any time you have a reference to a store, you can access its value inside a component by prefixing it with the `$` character. This causes Svelte to declare the prefixed variable, subscribe to the store at component initialization and unsubscribe when appropriate.
Assignments to `$`-prefixed variables require that the variable be a writable store, and will result in a call to the store's `.set` method.
@ -321,4 +321,4 @@ In that case, the `<style>` tag will be inserted as-is into the DOM, no scoping
}
</style>
</div>
```
```

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