# SDK installation (EN)
## SDK
Add this code right after the opening ``, and replace `YOUR_ACCOUNT_ID` with your actual account id.
```markup
```
## Declaring slots
You can declare slots, or places where widgets should appear by simply putting the following tag where you want them on your pages:
```markup
```
In order to ensure your slots are correctly filled, we **highly recommend naming them**, this way if the slot order in your page is altered, the SDK will still be able to identify them.
Example:
```markup
```
For more technical details, go the [SDK documentation](/sdk).