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Merge pull request #1378 from bobtfish/better_doc_math 

Document the fix to GH-1068 on the website
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Paul Hinze 2015-04-06 11:00:08 -05:00
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website/source/docs/configuration/interpolation.html.md
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@ -16,6 +16,9 @@ into strings. These interpolations are wrapped in `${}`, such as
The interpolation syntax is powerful and allows you to reference The interpolation syntax is powerful and allows you to reference
variables, attributes of resources, call functions, etc. variables, attributes of resources, call functions, etc.
You can also perform simple math in interpolations, allowing
you to write expressions such as `${count.index+1}`.
## Available Variables ## Available Variables
**To reference user variables**, use the `var.` prefix followed by the **To reference user variables**, use the `var.` prefix followed by the