Tool Panels

Toolbars are program buttons grouped by functionality, as indicated by the bar's header

Within panels, buttons with similar functions can be grouped together

A group is represented by a button with a down arrow:

When you left-click the arrow, the other buttons in the group appear
The selected button (function) becomes active immediately and remains the "header" button in the group until another is selected

Application Tool Panels

Archive - located above the Preview Bar.
Studies - operations with the active study
Layout - splitting the screen into studies, series, and images Hidden by default The button near the "Archive" button is used To display it, see Configuring Tool Panels
Image Processing
Measurements - measurements in images
3D