$if $if APC_LEVEL CLOCK_LEVEL CMCI_LEVEL CONTEXT CONTEXT_ALL CONTEXT_AMD64 CONTEXT_CONTROL CONTEXT_DEBUG_REGISTERS CONTEXT_EXCEPTION_ACTIVE CONTEXT_EXCEPTION_REPORTING CONTEXT_EXCEPTION_REQUEST CONTEXT_FLOATING_POINT CONTEXT_FULL CONTEXT_INTEGER CONTEXT_SEGMENTS CONTEXT_SERVICE_ACTIVE CONTEXT_XSTATE DbgRaiseAssertionFailure DISPATCH_LEVEL DRS_LEVEL EFLAG_SELECT EFLAG_SIGN EFLAG_ZERO EXCEPTION_EXECUTE_FAULT EXCEPTION_READ_FAULT EXCEPTION_WRITE_FAULT FastFence HIGH_LEVEL INITIAL_FPCSR INITIAL_MXCSR IPI_LEVEL KeFlushIoBuffers KeGetCurrentIrql KeGetCurrentProcessorNumber KeGetCurrentThread KeGetDcacheFillSize KeGetPcr KeLowerIrql KeMemoryBarrier KeMemoryBarrierWithoutFence KeQueryInterruptTime KeQuerySystemTime KeQueryTickCount KeRaiseIrql KeRaiseIrqlToDpcLevel KeRaiseIrqlToSynchLevel KeRestoreFloatingPointState KERNEL_LARGE_STACK_COMMIT KERNEL_LARGE_STACK_SIZE KERNEL_MCA_EXCEPTION_STACK_SIZE KERNEL_STACK_SIZE KeSaveFloatingPointState KFLOATING_SAVE KfRaiseIrql KI_USER_SHARED_DATA LFENCE_ACQUIRE LoadFence LOW_LEVEL MemoryFence PAGE_SHIFT PAGE_SIZE PASSIVE_LEVEL PAUSE_PROCESSOR PCR_MAJOR_VERSION PCR_MINOR_VERSION PKFLOATING_SAVE POWER_LEVEL PROFILE_LEVEL PXMM_SAVE_AREA32 SharedInterruptTime SharedSystemTime SharedTickCount SharedUserData StoreFence XMM_SAVE_AREA32 YieldProcessor

#define CLOCK_LEVEL   13 Referenced by HalpClockInterruptHandler(), and HalpInitializeTsc().