// The flags values within this flag control the contents of
// a CONTEXT record.
// If the context record is used as an input parameter, then
// for each portion of the context record controlled by a flag
// whose value is set, it is assumed that that portion of the
// context record contains valid context. If the context record
// is being used to modify a threads context, then only that
// portion of the threads context will be modified.
// If the context record is used as an IN OUT parameter to capture
// the context of a thread, then only those portions of the thread's
// context corresponding to set flags will be returned.
// The context record is never used as an OUT only parameter.
// This section is specified/returned if CONTEXT_DEBUG_REGISTERS is
// set in ContextFlags. Note that CONTEXT_DEBUG_REGISTERS is NOT
// included in CONTEXT_FULL.