After starting the drawing tool, this large piece of white on the right side of the screen is the canvas. On the left is the toolbox, and below is the swatch. ?

Now the canvas is beyond the displayable range of the screen. If it is too big, you can drag the small square in the corner with the mouse to change the size.

Let's look at other drawing tools.

First, select a pencil in the toolbox, and then drag the mouse to draw a line on the canvas. You can also choose other colors on the color swatch to draw. Select the foreground color with the left mouse button and the background color with the right mouse button. When drawing, drag the left mouse button to draw the foreground color, and right mouse button to draw the background color.

Select the brush tool. It's not as thick as a pencil, but you can choose the size and shape of the nib. Click any pen tip here to draw different lines. ?

If the picture is wrong, it needs to be revised. Rubber tools can be used at this time. After selecting the eraser tool, you can use the left key or the right key to erase it. These two erasing methods are suitable for different situations. Left-click erasure is to erase the image on the screen and fill the passing area with background color.

Other drawing tools are as follows.