Toggle Span Lock
Toggles the locking of the time span. A time span is the "distance" in time between the start time and end time of the chart. For details, see Span Lock.
Back One Span
Moves the pen(s) back in time exactly one time span. For details, see Navigating time.
Back Half a Span
Moves the pen(s) back half a span. For details, see Navigating time.
Forward One Span
Moves the pen(s) forward in time exactly one span. For details, see Navigating time.
Forward Half a Span
Moves the pen(s) forward half a span. For details, see Navigating time.
Synchronize to Now
Synchronizes pen(s) such that the end date time reflects "now" which is positioned on the right-hand edge of the screen. "Now" is calculated using the current system time. For details, see Synchronize to Now.
Toggle Auto-Scrolling
Toggles the automatic scrolling off and on for every pen. For details, see Toggle Autoscrolling.