A non-permanent marker (also called a whiteboard marker or dry erasable marker), uses an erasable ink—an ink that adheres to the writing surface without binding or being absorbed by it—for temporary writing with overhead projectors, whiteboards, and the like. They may also be used by children when adults want to be able to clean up after them. The erasable ink does not contain the toxic chemical compounds xylene , unlike permanent markers.
wet erase markers are another version that are used on overhead projectors, signboards, whiteboards, and other non-porous surfaces.
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