# 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
4 Not
Description
The “not” operator is a unary operator and allows for only one embedded
rule. The operator will switch the results of the embedded rule unless an
invalid is returned. If the embedded rule returns an invalid, the operator will
return invalid as well.
Short Circuit
N/A
Usage
not<rule>
Example
notos.bitness(32)
The above example will return invalid if the embedded rule returns an invalid.
Otherwise it will return the opposite of the result of the os.bitness rule.
Return Values
Return
Code
Description
True If the embedded rule returns false
False If the embedded rule returns true
Invalid If the embedded rule returns invalid
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