apple-pascal-1.3-manual

On completion of the design, the program continues to display the designuntil you press any key on the Apple's keyboard. Just press the Apple'sSPACE bar, and the original prompt message will replace the design on thescreen. You are then ready to specify a new ORDER for another design (orspecify an ORDER of zero to quit the program).ICaution: This program is terminated if the ORDER response is not anumeric digit from 1 through 7.The GRAFDEMO ProgramGRAFDEMO is a collection of interesting graphic displays generated by anumber of very useful procedures.The program runs without any interaction; just watch the pictures and thenstudy GRAFDEMO.TEXT to see examples of how these things can be doneusing TURTLEGRAPHICS. You may even find it handy to use some ofGRAFDEMO's procedures directly, in your own programs.When you execute GRAFDEMO.CODE, this message appears:Press any key to guit.Please wait while creating butterflyJust wait; soon you will see butterflies and many other pictures. Pressingany key on the Apple keyboard will terminate this program on completionof whichever display is currently being created.Program GRAFDEMO contains examples of the following:o Using TURTLEGRAPHICS to draw frames, crosshatching, and so ono Creation of an array (BUTTER) for use by procedure DRA WBLOCKo Handling of a procedure that is too long, by breaking it into smaller parts(BUTTER) and calling those parts from another procedure(INITBUTTER).......The GRAFCHARS ProgramGRAFCHARS shows the characters found in the file SYSTEM.CHARSET,and their use from TURTLEGRAPHICS. The program runs withoutinteraction.Other Demonstration Programs 11-311