Webster defines an Accordion as:
a portable keyboard wind instrument in which the wind is forced past free reeds by means of a hand-operated bellows

DevExpress defines an Accordion as:
A new WinForms Control that extends the capabilities found in our existing XtraNavBar control. The Accordion Control allows you to create a full-featured NavBar with multiple items (actions). Items can be combined into groups. Groups can contain nested groups so you can create an advanced hierarchical navigation menu.
Features include:
- Unlimited number of hierarchy levels
- Items can display images and text
- Context buttons
- Item headers can display custom controls
- Item selection
- Group expansion/collapse animation (one or multiple groups can be expanded simultaneously)
- Built-in search

Both Accordions are cool but only one runs on Windows. Tell us what you think - is this something you might use in your next WinForms app?
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