Please describe the Dependency Expression Instruction Set: BEFORE
This opcode tells the DXE Dispatcher that the DXE driver that is associated with this dependency expression must be dispatched just before the DXE driver with the file name specified by GUID . This means that as soon as the dependency expression for the DXE driver specified by GUID evaluates to TRUE , then this DXE driver must be placed in the dispatch queue just before the DXE driver with the file name specified by GUID .
Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: Please describe the Dependency Expression Instruction Set: BEFORE ### Response: This opcode tells the DXE Dispatcher that the DXE driver that is associated with this dependency expression must be dispatched just before the DXE driver with the file name specified by GUID . This means that as soon as the dependency expression for the DXE driver specified by GUID evaluates to TRUE , then this DXE driver must be placed in the dispatch queue just before the DXE driver with the file name specified by GUID . 