A new Reset Annotations tool allows users to clear all annotations added during the current session in a single action — without affecting window/level settings, layout, hanging protocols, or image navigation state. 

What's New:

• The Reset Annotations tool is accessible from the viewer toolbar and toolbox under the Display section. 

• Selecting the tool immediately clears all session annotations from the current exam, including: 

• Linear, Cobb, angle, and ROI measurements 

• Text annotations 

• Spine annotations 

• Drop arrows and circles 

• If a keyboard shortcut is used to trigger the reset, a confirmation modal will appear before the action is executed. 

• The reset applies across all images within the current exam. 

Behavior and Boundaries 

• Window/level, layout, hanging protocols, and navigation state are not affected. 

• Only annotations added in the current user session are removed. Annotations saved to GSPS objects — including those from previous users or prior sessions — are preserved. 

• Tooltip label: "Reset annotations" (found under the Display section of the toolbox). 

Users can now customize Power Wheel behavior — including scroll speed increments and direction reversal mode — and save their preferences for persistent use across sessions. 

How to Access 

• With the Power Wheel visible in the viewer, right-click on the Power Wheel control. 

• The "Power Wheel Preferences" dialog opens, showing current speed settings and the active reverse direction mode. 

• Make changes and click "Save" to apply. Preferences are stored persistently. Click "×" to exit without saving. 

Speed Configuration

• Users can define up to 8 speed increments. 

• Default speeds: 2, 10, 20, 40, 60. 

• Each speed value must be a numeric value greater than 0 and no greater than 60. Non-numeric input is blocked. 

Reverse Direction Modes 

Four scroll reversal behaviors are available:

• Stop on first increment, then reverse direction — scrolling stops within one increment before reversing. 

• Reverse paging immediately — direction reverses without a stop. 

• Decelerate quickly, then reverse page — brief deceleration before reversing. 

• Decelerate slowly, then reverse page — gradual deceleration before reversing. 

Notes

• Left-clicking the Power Wheel continues to stop it immediately. This behavior is unchanged.

• Preferences are saved to the viewer configuration store and persist across sessions.