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The Cascading Style Sheets (CSS) specification describes how elements of web pages are displayed by graphical browsers. Section 4 of the CSS1 specification defines a "formatting model" that gives block-level elements—such as p and blockquote—a width and height, and three levels of boxes surrounding it: padding, borders, and margins. [4]
Modal windows are prone to mode errors. [1] [2] [3] On the Web, they often show images in detail, such as those implemented by Lightbox library, or are used for hover ads. [4] [5] The opposite of modal is modeless. Modeless windows don't block the main window, so the user can switch their focus between them, treating them as palette windows.
An animated toggle switch widget, demonstrating the ambiguous state problem. Early research on touchscreen interfaces has identified usability issues with toggle switches. [2] A common problem is ambiguous state indication: for example does the label "on" indicate the current state of the switch or the resulting state after interacting with it.
Toggle mechanism; Toggle switch; Toggling harpoon, an ancient weapon and tool used in whaling to impale a whale when thrown; A type of textile closure, like an elongated button; Toggle (Doonesbury character), a character in the comic strip Doonesbury; Feature toggle, a technique in software development; Cordlock toggle, for stopping a cord or ...
Like C-style languages, control flow is done with the while, for, do / while, if / else, and switch statements. Functions are weakly typed and may accept and return any type. Functions are weakly typed and may accept and return any type.
A feature toggle in software development provides an alternative to maintaining multiple feature branches in source code. A condition within the code enables or disables a feature during runtime . In agile settings the toggle is used in production, to switch on the feature on demand, for some or all the users.
Diagram of interactions in MVC's Smalltalk-80 interpretation. Model–view–controller (MVC) is a software design pattern [1] commonly used for developing user interfaces that divides the related program logic into three interconnected elements.
It is a normal modal logic, and one of the oldest systems of modal logic of any kind. It is formed with propositional calculus formulas and tautologies , and inference apparatus with substitution and modus ponens , but extending the syntax with the modal operator necessarily {\displaystyle \Box } and its dual possibly {\displaystyle \Diamond } .