# Slice Variable Block

Extracts a section with a variable value.

* **Variable name**\
  The name of the variable
* **Start index**\
  The zero-based index to begin extraction. When the start index is negative, GoLess starts extracting from the end of the value.
* **End index**\
  The index of the first element that should be excluded.


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# Agent Instructions: Querying This Documentation

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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
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```

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.