Merge pull request #1378 from bobtfish/better_doc_math
Document the fix to GH-1068 on the website
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@ -16,6 +16,9 @@ into strings. These interpolations are wrapped in `${}`, such as
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The interpolation syntax is powerful and allows you to reference
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variables, attributes of resources, call functions, etc.
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You can also perform simple math in interpolations, allowing
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you to write expressions such as `${count.index+1}`.
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## Available Variables
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**To reference user variables**, use the `var.` prefix followed by the
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