# Vault 7: Projects

This publication series is about specific projects related to the Vault 7 main publication.

### Grasshopper

# Grasshopper-v1_1-AdminGuide

1 December, 2013

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SECRET//ORCON//NOFORN
2.2.3 Variables
The Grasshopper rule grammar supports the use of variables within rule files.
The variables must be listed before any rules, and they must be upper case. The
rule grammar replaces each instance of the variable within the rules with the
exact text provided in the variable definition. The variable definition format is
shown below:
<variable name>=<variable value>
Rule variables are completely optional but can be very helpful when writing
larger rule files.
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