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A common example using a GUI accordion is the Show/Hide operation of a box region, but extended to have multiple sections in a list. SlideVerse is an accordion interface providing access to web content. [1] The list view of Google Reader also features this. In an early example, Apple's download page used roll-over accordions in 2008.
In computing, tabbing navigation is the ability to navigate between focusable elements (such as hyperlinks and form controls) within a structured document or user interface (such as HTML) with the tab key of a computer keyboard. Usually, pressing Tab will focus on the next element, while pressing Shift + Tab will focus on the previous element ...
Tabs may appear in a horizontal bar or as a vertical list. Horizontal tabs may have multiple rows. In some cases, tabs may be reordered or organized into multiple rows through drag and drop interactions. Implementations may support opening an existing tab in a separate window or range-selecting multiple tabs for moving, closing, or separating ...
A collapsible element contains a toggle a reader can use to show or hide the element's content. Elements are made collapsible by adding the mw-collapsible class, or alternatively by using the {{}} template, or its variants {{Collapse top}} and {{Collapse bottom}}.
Unlike the piano accordion, but in similar fashion to diatonic free-reed instruments such as the melodeon, Anglo concertina, or harmonica, a given bandoneon button produces different notes on the push and the pull. This means that each keyboard has two layouts: one for opening notes, and one for closing notes.
The accordion was spread across the globe by the waves of Europeans who emigrated to various parts of the world in the late 19th century and early 20th century. The mid-19th-century accordion became a favorite of folk musicians for several reasons: "The new instrument's popularity [among the common masses] was a result of its unique qualities.
How many reeds an accordion has is specified by the number of treble ranks and bass ranks. For example, a 4/5 accordion has four reeds on the treble side and five on the bass side. A 3/4 accordion has three reeds on the treble sides and four on the bass side. Reed ranks are classified by either organ 'foot-length' stops or instrument names ...
This is a list of articles describing traditional music styles that incorporate the accordion, alphabetized by assumed region of origin.. Note that immigration has affected many styles: e.g. for the South American styles of traditional music, German and Czech immigrants arrived with accordions (usually button boxes) and the new instruments were incorporated into the local traditional music.