/* Advance/Retreat lines and set CurrentLine in BufferImage to it. */
HEFI_EDITOR_LINE* HMoveCurrentLine(IN INTN Count)
/* Advance/Retreat lines and set CurrentLine in BufferImage to it. */
HEFI_EDITOR_LINE* HMoveCurrentLine(IN INTN Count)
{
  HEFI_EDITOR_LINE  *Line;
  UINTN             AbsCount;
  if (Count <= 0) {
    AbsCount = (UINTN)ABS (Count);
    Line     = HLineRetreat (AbsCount);
  } else {
    Line = HLineAdvance ((UINTN)Count);
  }
  if (Line == NULL) {
    return NULL;
  }
  HMainEditor.BufferImage->CurrentLine = Line;
  return Line;
}