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• has an optional (not direction for local variables) direction, 
• can be static, 
• has a datatype (integer, boolean, real, string, void)
• an optional initial value
• has a CombineOperator (-, +, *, max, min, or, and, host).

VariableDefinition:
{VariableDefinition} direction=VarDirection? (isStatic?='static')? name=ID ':'type=[types::Type|FQN] ('=' varInitialValue=Expression)? ('with' varCombineOperator=CombineOperator)?;

Examples:

Signals

4 views to implement signals:

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