If you wanted to create a colorful drawing that could be easily erased or altered,gall ink would be a good medium to use.

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Gall ink, also known as iron gall ink, is a type of ink that is not easily erased or altered once it has dried. It is often used for permanent writing, such as in historical documents, due to its durability. If you wanted to create a drawing that could be easily erased or altered, you may want to consider using a different medium such as pencil, erasable pen or marker, or washable paint.

If You Wanted to Create a Colorful Drawing That Could