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Document the fix to GH-1068 on the website #1378

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Apr 6, 2015
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Document the fix to GH-1068 on the website #1378

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3 changes: 3 additions & 0 deletions website/source/docs/configuration/interpolation.html.md
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Expand Up @@ -16,6 +16,9 @@ into strings. These interpolations are wrapped in `${}`, such as
The interpolation syntax is powerful and allows you to reference
variables, attributes of resources, call functions, etc.

You can also perform simple math in interpolations, allowing
you to write expressions such as `${count.index+1}`.

## Available Variables

**To reference user variables**, use the `var.` prefix followed by the
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