Roll-up Buttons (similar to CorelDraw)

There is a special type of control bar that has the ability to drop down or pop up when the user holds a "top-level" toolbar button for a while. The drop-down toolbar button has a small arrow at the right-bottom corner of it. Drop-down toolbars can't be customized, docked, or have the tear-off state.

Highlighted roll-up button:

Pressed roll-up button with drop down toolbar:

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