Characteristic double peak from two closely spaced shear bursts in simulation g11 is visible in magnetic helicity. The magnetic helicity H_M at low-wavenumbers k is shown scaled to its initial time-value with sign preserved. Magnetic helicity quantities are shown scaled to their initial time values in a way that preserves sign. The magnitude of the magnetic stretching tensor is shown shifted and scaled to fit the scale of the magnetic helicity, to provide a time-reference for the shear bursts.