In computing and Human-computer interaction the term Popup menu or pop-up menu refers to several different widgets depending on the context and platform:

• GNOME [1] and Microsoft Windows [2] use the term to refer to Context menus
• In the Mac OS [3] and Mac OS X [4], it refers to a Drop-down list
• In the Swing toolkit for Java, JPopupMenu [5] is a class that encompasses most types of menus

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