A drawing can be made in either of two ways. First the drawing can be specified by simply typing in a C program using the built in editor. Of course with this editor it is easy to import components of previous drawings. A drawing can however also be made using the mouse. First the desired drawing function is selected using the drop down menus on the top row. There are menu buttons for the C keywords, drawing functions, miscellaneous functions, and the defined constants. Selecting an item causes it to be inserted in the text at the current text cursor position. Many functions require coordinate points as parameters. These can be entered by moving the mouse to the desired location on the drawing page and double clicking the left mouse button. if the text cursor is currently located at the start of a coordinate pair, that coordinate pair is erased and replaced with a new coordinate when the left mouse button is doubled clicked. In this way it is possible to draw interactively with the mouse or by entering text which ever is more convenient for the task at hand. Parameter errors are not detected until the file is executed using CTRL G or the 'exec' menu button.