HP 38g Graphing Calculator - Manual (Page 29)

To draw a line 1. In Sketch view, press {{DRAW}} and move the cursor to
where you want to start the line
2. Press {{LINE}}. This turns on line-drawing.
3. Move the cursor in any direction to the end point for the
line.
4. Press {{OK}} to finish the line.
To draw a box 1. In Sketch view, press {{DRAW}} and move the cursor to
where you want any corner of the box to be.
2. Press {{BOX}}. This turns on box-drawing.
3. Move the cursor to mark the opposite corner for the box.
You can adjust the size of the box by moving the cursor.
4. Press {{OK}} to finish the box.
To draw a 1. In Sketch view, press {{DRAW}} and move the cursor to
circle where you want the center of the circle to be.
2. Press {{CIRCL}}. This turns on circle-drawing.
3. Move the cursor the distance of the radius.
4. Press {{OK}} to draw the circle.
Getting Started 1-21