A felt-tip pen, or symbol, has a poriferous tip of sinewy real. The smallest, finest-tipped markers are old for composition on material. Medium-tip markers are ofttimes utilised by children for foodstuff. Large markers are victimized for composition on otherwise surfaces such as cardboard boxes and whiteboards. Markers with open tips and radiant but transparent ink, called highlighters, are victimised to gospels existing text. Markers organized for children or for temporary activity (as with a whiteboard or elevated projector) typically use non-permanent inks. Biggish markers old to adjudge conveyance cases or else packages are commonly ageless markers.
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