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Its contents are only revealed when the user selects it with a pointer. The user is then able to select the items within the pull-down menu. When the user clicks elsewhere the content of the menu will disappear. [5] A context menu is invisible until the user performs a specific mouse action, like pressing the right mouse button. When the ...
This named isotope later became the official name for element 89. AcA: Actinium A: 84: From actinium and A. Placeholder name given at one time to 215 Po, an isotope of polonium identified in the decay chain of actinium. AcB: Actinium B: 82: From actinium and B. Placeholder name given at one time to 211 Pb, an isotope of lead identified in the ...
The first letter is always capitalized. While the symbol is often a contraction of the element's name, it may sometimes not match the element's English name; for example, "Pb" for lead (from Latin plumbum) or "W" for tungsten (from German Wolfram). Elements which have only temporary systematic names are given temporary three-letter symbols (e.g ...
Arabic uses Fulan and Fulana[h] (فلان / فلانة) as placeholder for first names. When a last name is needed, Fulan is repeated, e.g. Fulan AlFulani and Fulana[h] AlFulaniyya[h] (فلان الفلاني / فلانة الفلانية). When a second placeholder name is needed, ʿillan, ʿillana[h] (علان / علانة) is used.
List box – a graphical control element that allows the user to select one or more items from a list contained within a static, multiple line text box. Spinner – value input control which has small up and down buttons to step through a range of values; Drop-down list – A list of items from which to select. The list normally only displays ...
A classical element referred to as the Fifth Element in ancient and medieval times. It is believed to be the material that fills the region of the universe beyond the terrestrial sphere. This belief goes as far back as Plato's Timaeus , where it is said that "there is the most translucent kind which is called by the name of aether (αἰθήρ)".
Because of the risk that placeholder material might accidentally be published, it is clearly marked with an FPO indicator in the form of a simulated watermark or overprint, stamp, or the like in the expectation that it will make the placeholder's presence obvious to designers working on the layout; reviewing proof copies; or, as a last resort ...
A table listing the 17 rare-earth elements, their atomic number and symbol, the etymology of their names, and their main uses (see also Applications of lanthanides) is provided here. Some of the rare-earth elements are named after the scientists who discovered them, or elucidated their elemental properties, and some after the geographical ...