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| visual programming language ： FOLDOC |
visual programming language
(VPL) Any programming language that allows the user to specify a program in a two-(or more)-dimensionsional way. Conventional textual languages are not considered two-dimensional since the compiler or interpreter processes them as one-dimensional streams of characters. A VPL allows programming with visual expressions - spatial arrangements of textual and graphical symbols.
VPLs may be further classified, according to the type and extent of visual expression used, into icon-based languages, form-based languages and {diagram languages}. {Visual programming environments} provide graphical or iconic elements which can be manipulated by the user in an interactive way according to some specific spatial grammar for program construction.
A visually transformed language is a non-visual language with a superimposed visual representation. Naturally visual languages have an inherent visual expression for which there is no obvious textual equivalent.
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-based languages and {diagram languages}. {Visual programming environments} provide graphical or iconic elements which can be manipulated by the user in an interactive way according to some specific spatial grammar for program construction.
A visually transformed language is a non-visual language with a superimposed visual representation. Naturally visual languages have an inherent visual expression for which there is no obvious textual equivalent.
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