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  {\bf Pic} language is a TROFF preprocessor for drawing line drawing in UNIX environments.
In this work, a convenient graphical interface, the WD-editor for {\bf Pic} users was developed in X Windows environment, using Motif. The WD-editor combines graphical and text building and editing of pictures
and produces pictures on a screen and a corresponding internal representation, which is fully compatible with
{\bf Pic} format. The displayed pictures in the WD-editor are partly realized partly as an independent part and partly  with the help of existing {\bf Pic} compiler. The original {\bf Pic} compiler's source code was modified and incorporated as a separate process in the WD-editor. WD-editor was tested and showed the number of advantages over writing  in the {\bf Pic} language and over use of a traditional WYSIWYG drawing program.





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