The selection tool is a little bit like the lasso tool, but instead of having to trace where you want to select, you can just tap. Using the selection tool, you can draw in specific areas that you might want to color. For example; you could use the selection tool in an outline of a character, go into a different layer, and color it in without coloring the background or other things you might not want to color in. There are similar tools like this in other drawing apps.
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