1. Is the diameter of the eraser set too small? You can set the eraser size of the numbers displayed under the menu bar. Or right-click to set the size value. 2. Is "Erase to History" checked in the attribute column? Select this option to restore the changed chart.

3. Is the layer unlocked? If it is not unlocked, we can't edit the background picture.

If you say there is no problem ahead, there is another possibility! Did you choose the background eraser? Because the background eraser is cross-shaped. Solution: Right-click the Eraser Tool and select Eraser Tool. In this way, the ordinary eraser is restored.

Eraser, in Britain and Australia, eraser is called eraser; ; But in America, rubber is one of the common names of condoms, and the name of eraser is eraser. This difference is often regarded as a joke by Americans. Now there are many kinds of erasers to meet different needs.

Development history:

In 1770, British scientist joseph priestley said, "I saw a substance that is very suitable for erasing pencil handwriting." At that time, the whole of Europe used rubber particles cut into small cubes to erase handwriting. This substance is called an eraser.

Edward Gnehm, another British engineer, is believed to have invented the eraser in 1770. Before that, people used bread crumbs to erase handwriting. Naimei said that once he accidentally picked up a rubber as bread crumbs, but found that the effect was very good, so he began to produce and sell rubber.