## 13.4 System Modules

### 13.4.1 Search Engines renamed

The engines that used to be available by `SearchOne`, `SearchAll`, and `SearchBest` are now available under `Search.base.one`, `Search.base.all`, and `Search.base.best` (for more information see Chapter 4 of ``System Modules''). However in the Oz Programming Interface `SearchOne`, `SearchAll`, and `SearchBest` are still available for convenience.

### 13.4.2 Scheduling support moved

Scheduling support is now provided by the system module `Schedule` rather than `FD.schedule`. See also Chapter 11 of ``Finite Domain Constraint Programming in Oz. A Tutorial.'' and Chapter 6 of ``System Modules''.

### 13.4.3 `System.get` and `System.set`

`System.get` and `System.set` have been replaced by more powerful procedures that are available in the module `Property`, which is described in Chapter 23 of ``System Modules''.

### 13.4.4 `System.valueToVirtualString` and `System.virtualStringToValue`

`System.valueToVirtualString` and `System.virtualStringToValue` are now available as `Value.toVirtualString` (see Chapter 3 of ``The Oz Base Environment'') and `Compiler.virtualStringToValue` (see Section 4.2 of ``The Mozart Compiler''). In particular, `Compiler.virtualStringToValue` is a full featured and stable replacement for the ad-hoc `System.virtualStringToValue`.