The right side of the screen displays the parameter currently being modified. All parameter changes are made on this side before being entered to the left side.

The 801G*’s upper “Format” knob moves a selec- tion box among the steps and parameters on the left side of the screen. The knob moves the selection box horizontally across the screen until the step number or last parameter is selected. Then the next move will be to the adjacent row. This causes a “snaking” action. If the list goes beyond the bottom of the screen, turning the knob further clockwise will cause the list to scroll up. The example screen has the rectangle primitive in step #1 selected.

The lower “Image” knob modifies the parameter that the top knob has selected. If a non-numeric param- eter (e.g. primitive type) is selected, the right side of the screen will show a list of available primitives and the bottom knob will move a selection box up and down through this list. Long lists will scroll up and down on the screen. If a numeric parameter is selected, the value is copied to the right side of the screen and an underscore cursor is placed below a digit in the number. The <_Cursor button moves the digit cursor and the bottom knob changes the se- lected digit. Pressing the Change button copies the entry on the right side to the left side.

Available Primitives: The table on the next page lists all of the drawing primitives supported by the current firmware.

The size and location coordinates shown in the editor are in units of pixels. The values that actually are saved in memory are based on per- centages of the total number of active pixels and lines in the format. This means that your image will look about the same no matter how many active pixels and lines are in the format at the time the image is drawn. This also means that if you create custom image with one format and edit it with another, the numbers in the editor screen will change for the same image.

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Quantum Data 801GC, 801GF, 801GX manual