| Interface | Description | 
|---|---|
| FeatureVariable | 
 A Feature marked as a Variable in the installation will exist even when a robot is turned off and on. 
 | 
| GlobalVariable | 
 Global variables are available everywhere in a program. 
 | 
| PersistedVariable | 
 This interface represents variables stored with the installation. 
 | 
| ValuePersistedVariable | 
 This interface represents variables stored with the installation. 
 | 
| Variable | |
| VariableFactory | 
 
 This interface supplies methods to create variable objects. 
 | 
| VariableModel | 
 Provides methods that returns the variables that currently are registered in the system. 
 | 
| Class | Description | 
|---|---|
| VariableFilterFactory | 
 This interface provides predefined filters that can be used when searching for particular types of variables. 
 | 
| Enum | Description | 
|---|---|
| Variable.Type | 
 The variable type used to determine which type of variable this instance is. 
 | 
| Exception | Description | 
|---|---|
| VariableException | 
 This exception is thrown if a Variable has an illegal name. 
 | 
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