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A Language-sensitive Text Editor

Visual Prolog contains all the features that you expect to find in a modern development environment, for instance a powerful source code editor with color-coding of Visual Prolog keywords and other language elements. The colors make it much easier to differentiate between predicate names, parameters, comments, etc. as, for example, integer constants can be assigned to display in red. The editor supports an unlimited undo and redo facility, search and replace, cut, copy, paste, drag and drop for quick block movements, even hypertext links can be embedded. Moreover, as with previous PDC editors, you can include the editor functionality in your own applications!

A unique feature of the editor as used within the VDE is that it knows about all the predicates, user interface components, colors, constants etc. of Visual Prolog. All these things can be readily pasted into the source code with a click of the mouse.