I support this. I have an exercise solution sheet. I wanted to cover up the solutions to solve it myself but couldn't use shapes. Stickers ratio cannot be modified so I couldn't use stickers. Trying to put an image to cover it was annoying and I had to cover all solutions by striking it out with the pen. It took my time and it looks very ugly.
selman
supported this idea
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I support this. I have an exercise solution sheet. I wanted to cover up the solutions to solve it myself but couldn't use shapes. Stickers ratio cannot be modified so I couldn't use stickers. Trying to put an image to cover it was annoying and I had to cover all solutions by striking it out with the pen. It took my time and it looks very ugly.